When Mo Farah entered his hotel room on his 36th birthday last month in Ethiopia, he quickly noticed he had been robbed.

A locked case had been opened. Two phones were taken. A watch given to him by his wife was gone. So, too, was his cash.

The four-time Olympic champion said he felt let down by the hotel — owned by retired running great Haile Gebrselassie.

Britain's Mo Farah poses for the media during a photo call for the London Marathon in London, Wednesday, April 24, 2019. Farah will take part in the 39th London Marathon which takes place Sunday April 28. (AP PhotoAlastair Grant)

Britain's Mo Farah poses for the media during a photo call for the London Marathon in London, Wednesday, April 24, 2019. Farah will take part in the 39th London Marathon which takes place Sunday April 28. (AP PhotoAlastair Grant)

The YaYa Africa Athletics Village caters to professional athletes with its Olympic standard running track and massage therapy services. Farah had been staying there for three months preparing for Sunday's London Marathon.

"I am disappointed with Haile," Farah said Tuesday.

Farah revealed details of the robbery following a news conference ahead of Sunday's race.

Britain's Mo Farah poses for the media during a photo call for the London Marathon in London, Wednesday, April 24, 2019. Farah will take part in the 39th London Marathon which takes place Sunday April 28. (AP PhotoAlastair Grant)

Britain's Mo Farah poses for the media during a photo call for the London Marathon in London, Wednesday, April 24, 2019. Farah will take part in the 39th London Marathon which takes place Sunday April 28. (AP PhotoAlastair Grant)

"Someone in reception had given my key to someone and someone has gone in and opened my room and opened my suitcase," Farah said. "It was locked on a code. And someone taken my two phones, taken my money, taken my watch that my wife got me that you can't buy.

"The hotel never took responsibility or ... (did) anything to get my stuff back. I asked them, they got the police involved. They said they arrested some five guys, they were released."

The hotel and Gebrselassie's Dutch management team did not immediately respond to questions for comment.

Britain's Mo Farah leaps as he poses for the media during a photo call for the London Marathon in London, Wednesday, April 24, 2019. Farah will take part in the 39th London Marathon which takes place Sunday April 28. (AP PhotoAlastair Grant)

Britain's Mo Farah leaps as he poses for the media during a photo call for the London Marathon in London, Wednesday, April 24, 2019. Farah will take part in the 39th London Marathon which takes place Sunday April 28. (AP PhotoAlastair Grant)

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Britain's Mo Farah, right, and Kenya's Eliud Kipchoge pose for the media during a photo call for the London Marathon in London, Wednesday, April 24, 2019. Kipchoge and Farah are part of the Elite Men taking part in the 39th London Marathon which takes place Sunday April 28. (AP PhotoAlastair Grant)

Britain's Mo Farah, right, and Kenya's Eliud Kipchoge pose for the media during a photo call for the London Marathon in London, Wednesday, April 24, 2019. Kipchoge and Farah are part of the Elite Men taking part in the 39th London Marathon which takes place Sunday April 28. (AP PhotoAlastair Grant)