CHICAGO (WLS) -- Chicago police held roll call outside in Chicago's Lakeview neighborhood to reassure residents in light of an increasing number of armed robberies and random attacks, mostly on women, over the summer."When I first moved to Chicago, about two and a half years ago, I felt very safe in this neighborhood," said one resident. "But now with this increase in robberies and assaults, I don't feel safe.""It doesn't matter what time of day. It doesn't matter who's around, the attacks are happening everywhere at any time. And it's just totally radom," said resident Morgan Lockwood.Chicago Alderman Tom Tunney shook hands with the officers on Tuesday. He invited residents to attend the public show of force. Because most of the incidents are taking place overnight, the Ald. Tunney says he's working with the bars and restaurants in the area to alert residents to the spike in crime."We're going to put out a notice, just to be street smart folks," Ald. Tunney said. "Not to be walking down alleys, not to be wandering alone. Make sure you keep an eye on your valuables and your drink."Police say it is not clear if the recent incidents are related, but the department has put out two alerts in just the last couple of weeks.On Friday, a woman was attacked and robbed in the 2800-block of North Sheffield. On Saturday, a woman in her 60s was attacked in the 1300-block of West Henderson when a man grabbed her from behind, choked her, and took her messenger bag. Last week, eight robberies were reported, five of which involved a weapon."There seems to be a trend, and it's a concern, very much a concern," said Tom Meirink, a Lakeview resident and neighbor of the 60-year-old woman who was attacked Saturday. "We neighbors need to get together and form the first line of defense."Chicago police believe one person may be behind at least some of the attacks. Anyone with information should call. They also advise residents to use common sense when out on the streets alone and report anything that seems out of the ordinary.