Firefighters responded to reports of a fire at Chicago’s Trump Tower Thursday morning.

Around 9 a.m., crews were dispatched to 401 N. Wabash in the city’s River North neighborhood after receiving a call on a still and box alarm fire in a trash compactor on the hotel's 50th floor.

An EMS Plan one was called to the scene with multiple ambulances, officials said, but the small fire was quickly put out by the hotel's sprinkler system.

Fire in trash area was controlled by sprinklers but engine 13 let out a line. No injury cfd helping mop up holding water back from shafts — Chicago Fire Media (@CFDMedia) February 18, 2016

Chicago Fire Department District Chief Tim Sampey said the fire "was minor" but firefighters spent extra time going through the 98-floor high-rise to ensure the smoke did not build.

No injuries were reported. Fire officials said the hotel received minimal damage and moderate smoke damage from the incident.

The cause of the fire is still unknown.