Arkansas City fire officials continue to investigate a vehicle fire that occurred Saturday in the 400 block of West Poplar Avenue, fire chief Bobby Wolfe said on Monday. “It is suspicious,” he said. “When we have more information we’ll put more out.” No one was injured when the passenger van caught fire in the driveway of a home. Arkansas City fire/EMS and Ark City police responded just after 3 p.m. and arrived when the large, white van was fully engulfed. They hosed down the vehicle for about 20 minutes to snuff out the fire before it spread to a garage directly behind the van.