GRAND RAPIDS, MI -- Grand Rapids firefighters are helping evacuate the Plaza Towers Apartments and the Courtyard Marriott hotel after power was cut to the buildings due to water entering the basement, authorities said.

It wasn't immediately clear if the water problem was flood-related or possibly a broken water main under the adjoined buildings at 201 West Fulton Street and 11 Monroe Ave. NW.

Grand Rapids city workers arrive at the Courtyard Marriott and Plaza Towers Apartments to begin pumping standing water from the parking garage of the building.

Thick, black smoke was pouring from the structure about 9:30 a.m. on Saturday, April 20, as firefighters and hotel staff assisted residents and guests leave the building.

There were no reports of flames in the structure and authorities are investigating the situation. People leaving the building said the smoke was from a generator inside.

City work crews have arrived at the building to begin pumping standing water from the entrance of the parking garage, where cars are reportedly flooded.