Two men with guns committed three separate armed robberies in five minutes early Thursday in Northeast Washington, getting away with credit cards, money and smartphones, according to D.C. police.

Officer Araz Alali, a department spokesman, said detectives believe the holdups are related. No arrests have been made as of Thursday morning. He said the descriptions, though vague, were similar. At least one wore a black mask.

The first robbery occurred about 12:10 a.m. in the 3700 block of 31st Place NE., near Eastern and Rhode Island avenues near the Maryland line.

Alali said two gunmen confronted a woman and demanded her purse, cellphone and social security card.

Four minutes later, and five blocks away, police said, two men with guns robbed a man from Oxon Hill and his female companion from Silver Spring. That occurred in the 3400 block of Fort Lincoln Drive, Alali said. Credit cards, iPhones, a black purse, $75 and identification cards were taken.

A minute later, at 12:15 a.m., two men robbed two 17-year-old males, one from Hyattsville, another from the District, of an iPhone, a watch, keys and shoes, Alali said.