A huge, 2-alarm fire was reported Thursday evening on 14th and E streets in downtown Sacramento.
Neighboring businesses and homes were evacuated, according to fire crews.
A collection of vintage cars is believed to be inside the privately-owned building.
No one was reported to have been hurt as of 7 p.m.
Firefighters did not say how they think the fire started.
Investigators say the fire is suspicious. Anyone with information is asked to contact the Arson Tipline (916) 808-8732.