A manhunt is underway for armed robbers who struck three Nassau stores between Saturday night and early Sunday morning.Two men wearing hooded jackets and ski hats burst into a Uniondale Domino?s Pizza on Front Street before midnight. The manager says an employee was so scared she couldn?t open the register and customers were also in the store. Police say the same two men struck a Baldwin Dunkin? Donuts on Grand Avenue around 1:25 a.m. The duo struck a third time at a West Hempstead 7-Eleven on Hempstead Avenue around 3:45 a.m.

Investigators say in each robbery, one man held a shotgun while the other took money. Some store managers tell News 12 Long Island they provided surveillance video to police.