A Walmart store in Suisun City is closed indefinitely after sustaining major water and smoke damage in an act of arson, officials said. 

The fire happened at the store at 350 Walters Road on Wednesday just after 10:30 p.m., the Suisun City Fire Department said in a Facebook post. Customers in the store were evacuated after firefighters responded to the blaze. 

When they arrived, the fire crews saw smoke, an active fire and activated sprinklers inside the store. The smoke and water inside the store caused “significant” damage to the merchandise, the fire department said. 

Walmart spokesperson Kelly Hellbusch said there were no injuries. 

Authorities are still investigating the cause of the fire, but they’ve determined it was an act of arson, the department said. Anyone with information about the fire is urged to call the fire department at 707-421-7205.

The store is closed until further notice as officials evaluate the building and it goes through repairs, Suisun City Mayor Alma Hernandez said in a Facebook post. Hernandez told KGO-TV that the Walmart is the only pharmacy in the city. 

Walmart pharmacy prescriptions have been rerouted to Fairfield and Vacaville locations, the city said in a Facebook post. Extra staff have also been sent to the Fairfield Walmart.