The Indiana Gazette reports Wednesday that both incidents happened at the Indiana Mall, about 45 miles northeast of Pittsburgh.
Brenda Shirley says she and her husband Tim were at the mall about 9:45 p.m. Friday when a woman handed them a card with the words "open me" written on it. Inside was $100.
Dave Brozick, of Blairsville, says he had a similar experience, also on Friday, when a woman dropped another "open me" card in his lap. It also contained $100.
Brozick and the Shirleys both say the woman left before they could thank her.
Brenda Shirley says the lady "came out of nowhere ... we looked up and she was gone."