Arson investigators are searching for what caused a storage business to go up in flames in northwest Houston.

According to Houston's Fire Department, firefighters arrived at the business at Elmview Drive and Yupondale Drive around 9 p.m. Monday.

Upon arrival, firefighters discovered heavy flames coming from at least three storage units.

Fire officials said it took crews about 30 minutes to put out the flames.

Firefighters were extremely cautious due to the fuel and chemicals stored inside the units.

No injuries were reported.