A man was arrested Wednesday at the Walmart Supercenter on suspicion of taking portable oxygen tanks that belonged to one of the greeters, American Canyon Police Chief Jean Donaldson said Thursday.

Jimmy Green, 56, of Vallejo was arrested without incident at about 8:45 p.m. after store security detained him at the store, Donaldson said. The value of the two portable oxygen tanks was estimated at $1,100, he said.

Green, who was allegedly found in possession of a small amount of methamphetamine and marijuana, did not say why he took the tanks, the chief said. “But they’re fairly expensive,” he said.

He was arrested and booked into the Napa County jail on suspicion of grand theft, marijuana possession and drug possession, jail logs show.