HEIDELBERG, Miss. (AP) — Three monkeys remained on the loose Wednesday as searchers in masks, face shields and other protective gear scoured fields along a rural Mississippi highway where a truck carrying the primates overturned a day earlier.
It remained unclear who owns the monkeys, who was transporting them and where they were being taken when the truck crashed on Interstate 59 north of Heidelberg. Authorities have said most of the 21 monkeys were killed but haven't elaborated on just what occurred.
The Jasper County Sheriff’s Department has said animal experts from Tulane University examined the trailer Tuesday evening and determined three monkeys had escaped.
The truck was carrying Rhesus monkeys, which typically weigh about 16 pounds (7.2 kilograms) and are among the most medically studied animals on the planet. Video recorded after the crash showed monkeys crawling through tall grass beside the interstate, where wooden crates labeled “live animals” were crumpled and strewn about.
The truck was no longer at the scene Wednesday, but the searchers in gear including white coats, gloves and hair nets were checking fields, aided by law enforcement officers.
Jasper County Sheriff Randy Johnson said Tulane officials reported the monkeys were not infectious, despite initial reports by the truck's occupants warning that the monkeys were dangerous and harboring various diseases. Nonetheless, Johnson said the monkeys still needed to be “neutralized” because of their aggressive nature.
The monkeys were being housed at the Tulane University National Biomedical Research Center, which routinely provides primates to scientific research organizations, according to the New Orleans school. The research center is located in Covington, Louisiana, about 40 miles (65 kilometers) north of New Orleans.
The 21 monkeys had recently received checkups confirming they were pathogen-free, Tulane said in a statement Wednesday. The university said it wasn’t transporting the monkeys and didn’t own them, but sent a team of animal experts to help with their care.
All other monkeys were being transported back to Louisiana.
About 10 years ago, three Rhesus macaques in the breeding colony of what was then known as the Tulane National Primate Research Center were euthanized after a “biosecurity breach,” federal inspectors wrote in a 2015 report. The breach involved at least one staff member failing to adhere to biosafety and infection control procedures, it said.
The facility made changes in its procedures and retrained staff after that happened, according to the report from the U.S. Animal and Plant Health Inspection Service. Earlier this year, Tulane made a slight change to the name of the facility, replacing “Primate” with the word “Biomedical.”
The Mississippi Highway Patrol said Wednesday that it was investigating the cause of the crash, which occurred about 100 miles (160 kilometers) from the state capital, Jackson.
Dr. James Watson, Mississippi's state veterinarian, verified that the animals had the proper documents and “certificate of veterinary inspection” for legal transport across state lines, he said in an email to The Associated Press. The state's Board of Animal Health wasn't involved in the response to the crash, and additional information would need to come from Tulane, he said.
If anyone sees monkeys, they should call the authorities and shouldn't approach the animals, the sheriff’s office has warned.
Rhesus macaques "are known to be aggressive,” according to the Mississippi Department of Wildlife, Fisheries and Parks. It said the agency's conservation workers were working with sheriff's officials in the search for the animals.
The search comes about one year after 43 Rhesus macaques escaped from a South Carolina compound that breeds them for medical research because an employee didn't fully lock an enclosure. Employees from the Alpha Genesis facility in Yemassee, South Carolina, had set up traps to capture them.
Associated Press Writer Jeff Martin in Atlanta contributed.
The Mississippi Department of Wildlife, Fisheries and Parks set up a mobile command in Heidelberg, Miss. on Oct. 25, 2025. (AP Photo/Sophie Bates)
People wearing protective clothing search along a highway in Heidelberg, Miss., on Wednesday, Oct. 29, 2025, near the site of an overturned truck that was carrying research monkeys. (AP Photo/Sophie Bates)
The death of a nearly blind refugee from Myanmar who was found on a Buffalo street in February — five days after Border Patrol agents left him at a doughnut shop — has been ruled a homicide, authorities said Wednesday.
The Erie County Medical Examiner's Office didn't reach any conclusions about responsibility for Nurul Amin Shah Alam's death, which the agency said was caused by complications of a perforated duodenal ulcer, precipitated by hypothermia and dehydration. Ruling a death a homicide means it resulted from another person's actions — or inaction — but doesn't necessarily mean that a crime was committed.
“This should not have happened,” Erie County Executive Mark Poloncarz, a Democrat, said at a news conference Wednesday. Asked whether the Border Patrol was responsible for his death, he declined to comment and said any such determination would be up to law enforcement agencies.
State Attorney General Letitia James and Erie County District Attorney Mike Keane, both Democrats, noted Wednesday that their offices have been reviewing the case. Keane said in a statement that his office had requested Shah Alam's full autopsy report but “it would be inappropriate” to comment further.
U.S. Customs and Border Protection pointed Wednesday to its previous statement that Shah Alam “showed no signs of distress, mobility issues, or disabilities requiring special assistance” when agents dropped him off Feb. 19 at a Tim Hortons restaurant.
“This death had NOTHING to do” with Border Patrol, its parent agency, the Department of Homeland Security, said in a Feb. 27 social media post, decrying news coverage of the case as an effort “to demonize our law enforcement.”
Immigrant advocates called Wednesday for justice for Shah Alam, a member of the Muslim Rohingya ethnic minority. The group has faced discrimination and oppression in Buddhist-majority Myanmar.
Shah Alam sought safety in the U.S. and “instead, he was left to die in the street,” New York Immigration Coalition President Murad Awawdeh said, calling for a criminal investigation into the Border Patrol agents’ conduct: “Every single person who was involved must be held responsible.”
Gov. Kathy Hochul similarly called for accountability for everyone involved and said her aides spoke to the district attorney Wednesday afternoon. Hochul, a Democrat and Buffalo native, lambasted “the cruelty and inhumanity” of depositing a man who could barely see, or speak English, outside a then-closed restaurant.
Customs and Border Protection has said the restaurant was chosen as “a warm, safe location” near Shah Alam’s last known address.
Many details about the man's health and final days aren't publicly known, as his autopsy report is confidential under New York law.
But Erie County Health Commissioner Gale Burstein told reporters that Shah Alam developed what is commonly known as a stress ulcer, brought on in his case by dehydration and exposure to the cold. The ulcer breached his intestinal wall, creating what is generally a very painful medical emergency that needs rapid treatment, she said.
Shah Alam, 56, left Myanmar many years ago for Malaysia, where he worked in construction. He came to the U.S. as a refugee with his wife and two of his children in December 2024, according to advocates for the family.
Imran Fazal, who knows the family and founded a group called the Rohingya Empowerment Community, said Shah Alam's death left people grieving and fearful.
“This tragedy was entirely preventable, and it reflects a serious failure in the systems meant to protect vulnerable people," Fazal said Wednesday.
Shah Alam spent about a year in the Erie County jail on felony assault and other charges after a 2025 struggle with police who encountered him carrying what appeared to be curtain rods. Police said he bit two officers; advocates for his family said that he hadn't understood officers’ commands to drop the items.
He eventually pleaded guilty to two lesser, misdemeanor charges and was released from jail Feb. 19. Border Patrol then briefly detained him before determining that he wasn't eligible for deportation. His family, which had been awaiting his release from jail, wasn't informed of it.
Surveillance video, obtained by the Investigative Post, showed Shah Alam treading carefully through the Tim Hortons' empty parking lot in his county-issued jail booties, pulling his hood up against the cold and walking off into the night.
Shah Alam’s lawyer ultimately reported him missing to Buffalo police on Feb. 22.
On Feb. 24, he was found dead near the downtown sports arena where the NHL’s Buffalo Sabres play. It was unclear how he got there from the Tim Hortons, several miles away, and Burstein said Wednesday that it was impossible to determine exactly when he died.
FILE - This image from body camera video provided by the Buffalo Police Department shows Nurul Amin Shah Alam, center, led by Buffalo Police officers, Feb. 15, 2025, in Buffalo, N.Y. (Buffalo Police Department via AP, File)
