Police in Fargo arrested a suspect in a homicide — after they said he called authorities to tell them he had assaulted the man who died.

Authorities say the 29-year-old Fargo man told an emergency dispatcher about 6:30 a.m. Friday that he was involved in an assault that resulted in a man's death. Officers arrested the suspect at a gas station where he made the call.

Chief David Todd says the dead man was found in the suspect's apartment. Todd would not talk about what caused the man's death or a possible weapon, but said it was the result of a physical altercation.

Police say they have located a homeless man who may have seen the assault.