Two armed men wearing masks robbed an AT&T store at 594 Walt Whitman Road, at about 8:30 p.m. Thursday night.
The men restrained the employees before stealing cell phones and computer tablets.
Suffolk County Police Second Squad detectives are investigating.
The investigation is continuing. Detectives are asking anyone with information about this incident to call Second Squad detectives at 631-854-8252 or anonymously call Crime Stoppers at 1-800-220-TIPS.