WATERFORD TOWNSHIP, Mich. -

Police investigators continue to search for a man they say is partly responsible for a Dec. 23 shooting at the Rolladium Skating Center in Waterford Township.

Waterford Township police say Robert Lee German, 18, should be considered armed and dangerous.

Police say German, Tre-Andis Marquan-Jose Jamison, 21, of Pontiac, and 17-year-old Cheyenne Ingram injured five people when they opened fire inside the rink.

Jamison is wanted for 14 different charges including six counts of assault with intent to murder.

Ingram was arrested in January on similar charges.

Police advise not to approach German or attempt to apprehend him. Contact police immediately.

Anyone with information on his whereabouts is asked to call the Waterford Township Police Department at 248-618-7550.

Watch: Gunmen open fire on crowd at Rolladium Skating Center