Atlanta Police went door-to-door last month, asking Grant Park residents for help, and are now seeking the community with new sketches of potential suspects.

“We have not done a single canvass where we’ve not come away with information that’s assisted investigators,” said Police Chief George Turner as dozens of officers prepared to conduct the neighborhood survey.

Investigators were piecing together a case on several young men suspected in violent crimes that have plagued this part of the metro area in recent weeks.

Patrick Cotrona, 33, and a friend were robbed at gunpoint May 25, while walking home from a bar along May Avenue near Flat Shoals Road. In the ensuing gunfire, Cotrona was killed, his friend wounded. It was the second murder in this area within a week.

Another victim was shot May 17, losing an eye as a result. There have also been a number of armed robberies in the area and Turner said his investigators believe this might all be traced to a single group of “young black males who have really become a problem in our community.”

“We’ve got someone who is extremely dangerous without really any justification,” Turner said.

For the first time, Turner called the suspects members of a gang. He said he hoped this canvass will help garner enough information to stop them in their tracks.