A 17-year-old boy was clinging to life after being shot in the head Tuesday afternoon in Brooklyn. Cops responded around 12:28 p.m. at the Flatbush Gardens apartment complex near Foster Ave. and Brooklyn Ave. in Flatbush, where they found the youngster with a gunshot wound to the head, cops said. EMS transported the boy to Kings County Hospital Center, where he was in critical condition. It remained unclear what sparked the gunfire. Police said they were looking for three males dressed in all black who ran from the shooting on foot, and were headed toward New York Ave. Click here to read more on nydailynews.com.