Nassau County police are investigating two armed robberies Saturday evening — one at a Dunkin’ Donuts in Mineola and the other at an AT&T store in Westbury.

There were no injuries.

Police said the first robbery occurred shortly before 5 p.m. when Phillip Robinson, 52, of South Franklin Street, walked into the Dunkin’ Donuts at 120 Old County Rd. armed with a black handgun and demanded money.

The male restaurant worker, 20, complied and Robinson allegedly fled in a gold-colored vehicle with an undetermined amount of money, police said. He was later found driving southbound on South Franklin Avenue in Hempstead by First Precinct officers.

Robinson was charged with robbery, criminal use of a firearm and criminal possession of a weapon. He was scheduled for arraignment Sunday at First District Court in Hempstead.

In the second robbery in Westbury, police said a 22-year-old male was working at the AT&T store at 469 Old Country Rd. when two suspects walked in about 6:48 p.m., displayed a handgun and demanded cellphones. The robbers then removed an undetermined number of cellphones and left through a rear door. They were last seen getting into a white four-door sedan on Gordon Avenue.

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There were no detailed descriptions given of the suspects.

Detectives ask anyone with information on the Westbury robbery to contact Nassau County Crime Stoppers at 800-244-TIPS. All callers will remain anonymous.