After performing an autopsy earlier this year, the coroner determined in a March 22 report that Jonathan T. Lahr, 36, died of blunt force injury to his head an neck.
Investigators believe alcohol was involved in the incident.
Lahr’s roommate Samuel W. Petersen, 28, called 911 on Jan. 1 when Lahr became unconscious and stopped breathing.
According to police, Petersen told the dispatcher he had been fighting with his roommate, When officers arrived on the scene they observed injuries to the victim’s face.
Petersen and Lahr had been roommates at the apartment at 4589 Slater Road since June 2012.
Petersen was arrested on Jan. 2 on probable cause of felony first-degree assault and released on Jan. 3.
No charges have been filed against Petersen as of March 26.
Petersen has a prior conviction of disorderly conduct in a 2007 domestic assault investigation in Hennepin County.