Chicago police have identified a suspect in the multiple shooting death of eighth-grader Robert Freeman Jr., 13, The Associated Press reported. Freeman was shot 13 times on July 29 while riding his bicycle on the city’s South Side, and according to his family, the teen was the victim of mistaken identity.

According to the report, Chicago police said tips from witnesses point to a suspect, who has still not been found. However, police officials said “don’t snitch” culture has made finding the suspect, identified only as a young male, difficult.

Statistics posted on the Chicago Police’s Web site show that homicide is a troubling issue, with African Americans comprising 77.1 percent of the city’s crime victims between January 2010 and June.

Freeman was the fourth teen killed in area shootings that week.