Police say a Worcester man stole credit and debit cards from customers at a Concord gym and used them to make thousands of dollars in purchases. Pablo Rafael Rivera was arrested Wednesday at the Beede Center Gym. Police said it was the third time he had gone there and employees recognized him as the suspect from the previous thefts. He faces 27 charges in two separate thefts Feb. 11 and 19, including multiple counts of larceny and identity theft. Police said Rivera had a stolen card on him when he was apprehended.