Firefighters investigating cause of fire in downtown Ann Arbor highrise

ANN ARBOR, Mich. – Firefighters are investigating how a plastic plant in the 7th floor lobby of the Court House Square Apartments caught on fire Tuesday morning.

Ann Arbor Fire Department personnel arrive at the downtown highrise around 7:27 a.m. to find smoke and flowing water on the 7th floor.

Officials said the floor’s sprinkler system -- activated by the on-fire plant -- extinguished the fire. An elevator and several floors were damaged by the water but no one was injured.

Firefighters consider the incident suspicious.

Court House Square apartments are at 100 S. Fourth Ave.