The Texarkana Texas Police Department is investigating two overnight robberies at convenience stores that occurred within minutes of each other.  The same man is suspected in both robberies.

Officers were dispatched to the initial robbery at the EZ Mart in the 2800 block of Richmond Road at 12:41 this morning.  The clerk told officers that a man armed with a handgun entered the store and demanded money from the cash register.  After getting an undisclosed amount of money, the man fled from t...