ANKENY, Iowa — A fire kept multiple fire crews busy in Ankeny overnight.

A number of fire departments from around the metro were called to the Storage Mart on Southeast Delaware Avenue for a fire just after 9:30 p.m. Monday night.

The initial report from someone at a neighboring property said they could see fire and hear explosions. The Ankeny Fire Department arrived a few minutes after the call and saw flames coming through the roof of the building and heavy smoke coming from multiple storage units.

Fire departments from Altoona, Bondurant, Johnston-Grimes, Saylor and Polk City assisted in putting out the flames. Crews were on the scene for several hours.

No injuries were reported.

The cause of the fire is under investigation.