Photo: A two-alarm heavily damaged a Belmont Street house on Feb. 15.

A two-alarm blaze heavily damaged a Belmont Street residential property on Wednesday evening, Feb. 15.

Fire crews were dispatched after a 911 call came in at 8:43 p.m., according to a press release issued by Belmont Fire Chief David DeStefano. When crews arrived, heavy fire was coming from a top-floor window. The incident commander immediately struck a second alarm.

Firefighters from Cambridge, Watertown, Waltham, and Arlington provided mutual aid at the fire. Station coverage was provided by Lexington and Somerville.

The fire was brought under control around 10 p.m. There were no injuries. The American Red Cross assisted the five tenants displaced by the fire.

The origin and cause of the fire are under investigation by the Belmont Fire Department and the State Fire Marshal’s Office.