UPDATED 03/28/12 5:44 a.m.

CHICAGO (CBS) – Police are warning Near North Side residents of two recent armed robberies, both in busy and fashionable areas.

As WBBM Newsradio’s Steve Grzanich reports, the armed robberies happened on the streets in the River North and Old Town neighborhoods.

LISTEN: WBBM Newsradio’s Steve Grzanich reports

Police say in both cases, two men armed with knives approached victims on the sidewalk and announced a robbery.

The first robbery happened about 3 a.m. on March 9 in the 700 block of North Clark Street, police News Affairs Officer Daniel O’Brien said. The second happened about 1:30 a.m. Tuesday in 1200 block of North Wells, he said.

The suspects are described as 20- to 40-year-old black men about 6-feet tall and 200 pounds, police said. Both wear hooded sweatshirts.

Police are advising residents to tell neighbors about the situation, avoid walking alone and in dark areas, and refrain from talking on cell phones while walking.

The Sun-Times Media Wire contributed to this report.

© Sun-Times Media Wire Chicago Sun-Times 2012. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.

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