Hundreds of specialized forces kept looking in vain Friday for a heavily armed Belgian soldier who is on a federal anti-terror watch list and was seen early this week near the home of a person he had threatened.

Jurgen Conings, 46, an expert marksman known for his extreme-right sympathies, was still thought to be hiding in a vast nature park in northeastern Belgium that over 400 soldiers and police officials have combed for three straight days.

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Belgian military sit in a tank at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Hundreds of specialized forces kept looking in vain Friday for a heavily armed Belgian soldier who is on a federal anti-terror watch list and was seen early this week near the home of a person he had threatened.

Belgian military drive a tank at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Van Quickenborne refused to confirm that Conings' target on Monday was virologist Marc Van Ranst, a key scientific advisor on Belgium's COVID-19 program.

Belgian military arrive at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

The fugitive run by the experienced solider embarrassed the Belgian government. Conings, who had been on the anti-terror watch list for three months, was able to hoard heavy weapons in army barracks before disappearing this week.

Belgian military ride in a convoy at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military ride in a convoy at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military arrive at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military arrive at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military carry equipment at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military carry equipment at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military carry equipment at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military carry equipment at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Justice Minister Vincent Van Quickenborne said the man disappeared Monday and hung around the residence of one of several people he threatened before boobytrapping his own car with ammunition and four anti-tank missile launchers inside.

Belgian military sit in a tank at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military sit in a tank at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Van Quickenborne refused to confirm that Conings' target on Monday was virologist Marc Van Ranst, a key scientific advisor on Belgium's COVID-19 program.

“It is clear the man is armed and dangerous and that he said he had dangerous plans,” Interior Minister Annelies Verlinden told broadcaster VRT. “Over the coming hours and days, operations to catch him will continue.”

The pandemic has polarized opinion in many European nations, and Van Ranst previously had received death threats, including from Conings.

Belgian military drive a tank at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military drive a tank at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

The fugitive run by the experienced solider embarrassed the Belgian government. Conings, who had been on the anti-terror watch list for three months, was able to hoard heavy weapons in army barracks before disappearing this week.

Conings had a three-decade career behind him as a sniper and expert marksman before he started making threats and racist remarks on Facebook that earned him disciplinary sanctions. He remained authorized to work with arms.

Belgian military arrive at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military arrive at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military ride in a convoy at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military ride in a convoy at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military arrive at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military arrive at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military carry equipment at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military carry equipment at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military carry equipment at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)

Belgian military carry equipment at the entrance of the National Park Hoge Kempen in Maasmechelen, Belgium, Friday, May 21, 2021. Specialized forces on Friday continued their manhunt for an armed soldier who is on a Belgian anti terror watch list because of his extreme right sympathies but was still able to hoard heavy arms in army barracks before disappearing early this week. (AP PhotoFrancisco Seco)