Police say they’re investigating the suspicious death of a Florida man found dead behind a Mississippi apartment complex.

Long Beach police Chief Billy Seal tells reporters that the man has been identified as 34-year-old Adam Tuck, of Geneva, Florida. An autopsy to determine his cause of death is set for Wednesday.

Police say officers on Monday responded to a report of a man seemingly passed out in a yard and found Tuck’s body. He wasn’t a resident of the complex.

It’s unclear what led authorities to determine the death was suspicious. It’s also unclear why Tuck was in the area.