Police continue to investigate two armed robberies that happened Monday, that they believe are the work of the same suspect. The ABC store on Ala Moana Boulevard and Hobron Lane was robbed at 9:30 p.m. A man dressed in black, armed with a gun demanded cash then fled with an undetermined amount. Then, just before midnight, a man with a gun robbed the Longs Drug in Manoa Marketplace, and fled on foot. There were no injuries in either case. Police believe the same suspect hit both places.