There is a new way for crooks to steal money at ATMs called "Cash Trapping". An item is glued in the cash dispenser slot of the ATM which stops money from coming out when a withdrawal is made. When the customer realizes the money is not coming out and leaves, the glued item is removed from the ATM along with the cash.
Before using any ATM, please check the dispenser slot to be sure there are no foreign objects inside or over the slot.