ALTOONA, Iowa — Fire officials are investigating a fire at the Altoona Walmart store on Thursday night as suspicious.

The Altoona Fire Department said it was dispatched to the Walmart at 3501 8th Street SW on a commercial fire around 9:08 p.m. When they arrived at the store, crews saw dense smoke and fire near the interior rear of the store, and the sprinkler system was on.

Firefighters were able to put out the fire quickly and make sure shoppers and staff at the store were evacuated. The AFD said the fire was contained to a localized area in the store, thanks to the sprinkler system.

The fire appears suspicious, according to AFD, and they are working with the Altoona Police Department to investigate.

No injuries were reported from the incident.

Fire crews from Ankeny, Bondurant, Des Moines, Pleasant Hill, and Urbandale assisted the Altoona Fire Department.