Police are investigating two deliberately set fires that prompted the evacuation of a Walmart in Martinsburg.
Martinsburg police tell media outlets that the store was closed Sunday afternoon after someone set a rack of men's T-shirts and a pile of towels on fire.
Police say no one was injured. People in the store put out the fires with a fire extinguisher.
The West Virginia State Fire Marshal's office is offering a reward of up to $5,000 for information leading to an arrest.