Menominee Police are investigating the death of a man found unresponsive Tuesday afternoon. Just after 12:30 p.m. on December 9th, officers were called to the 1300 block of 15th Avenue for a report of an unconscious, unresponsive male. When they arrived, they determined the man had died. The Menominee Police Department says the case remains active and under investigation. They’re being assisted by the Menominee County Sheriff’s Office and the Michigan State Police Marquette Crime Lab. Authorities have not released additional details at this time.