Two parked semi-trailers burned behind Lowe's Home Improvement in Marana Tuesday afternoon.
No one was injured in the fire, which was reported at 4:20 p.m., at 4075 W. Ina Road, said Capt. Brian Keeley of Northwest Fire District.
The trailers were used for storage, and firefighters contained the blaze and stopped it from getting into the interior of the building, Keeley said.
Lowe's was evacuated for about one hour while 20 firefighters worked to control the fire, said Keeley.
The cause of the fire is under investigation. A damage estimate is unknown, Keeley said.
