TEMPE, Ariz. -- Investigators are trying to figure out what caused a massive warehouse fire in Tempe.
Firefighters from four departments spent the early morning hours battling the first-alarm blaze at the warehouse near Curry Road and McClintock Drive.
The fire broke out around 3:30 Monday morning. Firefighters and witnesses reported explosions at the scene. "Sounds like gunfire was going off," described witness Dillon Smith.
Crews had to go on the defensive after realizing it was too hot and too dangerous to make a direct attack on the flames.
"We made access to the warehouse where we were down on our stomachs trying to fight the fire," says Capt. Kevin Bailey of the Tempe Fire Department. "We were in about 15 feet, and had to pull ourselves out because of the safety."
Southbound McClintock Drive was closed for a time between Curry Road and Loop 202.
The fire was contained to a single building. No injuries were reported.
There are two business housed inside that warehouse: a medical supplier and an auto restoration company.