Stable worker Adan Fabian Perez, 48, was found dead Sunday in the back of a barn at Churchill Downs.

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A medical examiner is investigating the death of a Churchill Downs stable worker

The body was discovered Sunday morning in the back of a barn

About 400 people were in the area Saturday night, a police spokesman says

CNN  — 

A medical examiner is investigating the death of a 48-year-old stable worker named Adan Fabian Perez, a Guatemala native discovered in the back of a barn at Churchill Downs one day after the storied Louisville racetrack hosted the Kentucky Derby.

There are no suspects at this time, Louisville Police Lt. Barry Wilkerson said Monday, noting that police are investigating several altercations that occurred at the track.

It is not clear if those altercations are related to Perez’s death, which police are treating as a possible homicide due to his wounds and the location of the body.

Workers discovered the body around 5 a.m. and notified track security, who called police, said police spokesman Robert Biven.

Perez worked for veteran horse trainer Cecil Borel, who is the brother of three-time Derby winning jockey Calvin Borel.

“Those folks are devastated,” said Churchill Downs spokesman John Asher.

Perez had been working for Borel since 2008, and was found at Barn No. 8, which was not where he normally worked, Asher said.

About 400 people were located Saturday night in the rear of the racetrack, he said. “So we are trying to speak with as many people as we possibly can. We do have a few leads coming in.”

Biven described the track’s backside as “like a mini-city,” with 48 barns, workers’ dormitories and areas where trainers live. “It’s a 24-hour operation,” he said.

Perez was working at Churchill Downs along with his 19-year-old son, who identified his father’s body.

CNN’s Deborah Feyerick and Raelyn Johnson contributed to this report.