An armed robbery was reported Monday night on a street in upper Northwest Washington, in an area where at least 10 other robberies have occurred since late last year.

 Monday night’s holdup occurred as the victim was walking in the 4400 block of Albemarle Street NW, a quiet residential street about a half mile west of the Tenleytown station on Metro’s Red Line.

Police said the victim was approached from behind by someone with a dark-colored handgun who took property and fled on foot. Two other people, both male, who had been standing nearby, fled with the robber, police said.

The robbery came amid an increase of community concern about the holdups in neighborhoods relatively free of serious street crime.

The holdup came the night before a scheduled meeting of the Assembly of the DC Federation of Citizens Associations at which the topic is to be: “How Safe is Your Neighborhood?”

According to the president of the federation, D.C. police chief Cathy L. Lanier is expected to speak at the meeting which begins at 6:45 p.m. at All Souls Memorial Episcopal Church, 2300 Cathedral Avenue, NW.

Anne M. Renshaw, the federation president, said the chief would be asked about such concerns as street robberies.