GLENDORA, Calif. (AP) — A husband and wife were arrested after a gun they were carrying accidentally went off inside a Southern California Sam's Club store.

The San Gabriel Valley Tribune reports the man, 48-year-old Robert Duncan, was wounded in the forearm when the gun discharged Sunday at the store in Glendora.

Police say Duncan and his wife, Helen, were passing a bag between them that contained the gun. They dropped the bag, causing the gun inside to go off.

Robert Duncan was struck in the forearm by the bullet. Nobody else was hurt.

Officers found the couple at a hospital, where they were arrested and booked on suspicion of negligently discharging a firearm.

The newspaper says the husband is also expected to face a charge of illegal weapon possession.