A 66 year old Manitowoc man is in police custody after a suspected heroin overdose, and threats to police. Police responded to the potential overdose report in the 1300 block of Martin Street yesterday just after 7:00 AM. The man was in the living room when officers arrived, holding a kit containing items used for injecting heroin. According to the police report, when police attempted to confiscate the kit, the man placed the kit behind his back and “proceeded into a boxer’s stance”. The man was escorted outside where continued o threaten police with physical violence. The man was arrested on charges of Possession of heroin with intent to deliver, possession of drug paraphernalia, and threat to law enforcement.