Officials are investigating what appears to be a suspicious fire in Bucks County.

Around 8:55 p.m., a vacant building at Lawn and Maple avenues in Sellersville caught fire, police said. 

The fire went to three alarms and it took crews hours to bring it under control.

The cause of the fire appears to be suspicious, police said.  But they added the investigation is still in its early stages.

The building used to be a factory.

No one was hurt battling the fire.