The automatic sprinkler system at the Richmond Target store helped keep an arson fire in the store “small and nearly extinguished,” according to Richmond Firefighters Local 188.

The firefighters’ union shared video and photos from the fire response that occurred Thursday at the store in the 4500 block of Macdonald Avenue.

Luckily, no one was injured. While the fire damage was limited to a small portion of the aisle, the remainder of the store suffered extensive water damage from the sprinkler system, fire officials said. The store has been closed since the incident.

“Crews arrived at scene to find the occupants and employees already safely out front,” fire officials said.

Fire crews found smoke in the store coming from a fire in one of the aisles. They doused whatever fire remained after the sprinkler system activated.

According to Richmond police, firefighters deemed that the fire was intentionally set. No suspects were located at the scene and the case was referred to fire investigators for followup, police said.

The  El Cerrito and Contra Costa County fire departments also assisted with the incident.