DETROIT, MI- The Detroit Police Museum, filled with collections from the Detroit Police Department's rich 150-year history, had its grand opening Tuesday.

Detroit Police Department in partnership with the Detroit Public Safety Foundation hosted a ribbon cutting ceremony for the museum, located inside the Detroit Public Safety Building at 1301 Third St. in downtown Detroit.

Highlights

The collection includes fingerprints from James Riddle Hoffa, better know as Jimmy Hoffa. In 1964 Hoffa was convicted of jury tampering, attempted bribery and fraud. Hoffa's disappearance in 1975 remains a great mystery to this day.

The most striking piece, Officer Iron Mike, is a robotic-looking body suit painted black. According to the description the overall body armor was used for barricaded gunman situation circa, 1950s.

A 1910 stop-go traffic sign used by police to manually direct traffic from the street level. According to the

A Colt .32 Cal. Revolver that had gone missing in 1927 turned up 45 years later when a fisherman fished it out of the Detroit River at the foot of Livernois.

Other unique items include a police motorcycle, scooter, dispatch telephone switchboard and old investigative items like camera hidden inside a cigarette package and an audio recording device hidden in a brief case.

Hours, admission

The museum is open to the public Monday- Friday 9 a.m. to 4:30 p.m. and admission is free.

The Detroit Police Museum is located inside the Detroit Public Safety Building at 1301 Third St. in downtown Detroit.