Officials are investigating what sparked a warehouse fire in Waterbury.

Waterbury Fire Chief Gary Dillon said crews were called to 35 Foundry Street just after 2:30 a.m. Wednesday.

Dillon said the fire started on the outside of the warehouse, and eventually spread to the inside of the building.  

On Wednesday afternoon, Vermont State Police said the fire started in an open storage area that had a metal roof over it.

“There were some items being stored in this area, which caught fire and spread outwards and upwards to nearby combustible materials,” Vermont State Police said in a press release. “It was learned this area is known to be a hangout where people smoke and drink at night based on what was discovered in the fire remains.”

Dillon said the sprinkler system inside the warehouse prevented the fire from spreading.

Officials say no one was in the building at the time of the fire. No injuries were reported.

Anyone with information is asked to call Vermont State Police Detective Sgt. Todd Ambroz at 802-229-9191 or the Vermont Arson Tip Award Program at 1-800-322-7766.