Firefighters from several jurisdictions battled a five-alarm fire at the Fuse 47 apartment and commercial building which was under construction at the time on April 24, 2017 in College Park, Md. (Ricky Carioti/AP)

A five-alarm fire that ripped through an empty apartment building in College Park and required more than 200 firefighters to extinguish has been ruled accidental.

Fire investigators are still working to determine the official cause and origin of the blaze, which resulted in nearly $40 million in damage to the building that was under construction, according to the Prince George’s County Fire Department. A full investigation of the fire could take days or weeks as crews carefully navigate the rubble.

The fire began shortly after 9:30 a.m. Monday in the 4700 block Berwyn House Road. Crews from all over the region spent hours trying to control and put out the fire. The blaze blanketed the area with smoke and forced the evacuation of a nearby apartment and closure of the University of Maryland.

Authorities are asking anyone with video and photos of the initial phases of the fire to contact the department or submit images at PGFDPIO@co.pg.md.us.