The boy's body remained on the scene for hours, covered by a white sheet. After darkness fell, a group of relatives spoke with police officers before walking toward the body with them and then gathering near an idling car. Sobs carried though the winter night from the car, where two woman embraced in a long hug.



No one was in custody this morning and police were releasing no description of the shooter.



Business owners told WGN-TV that at least two cameras may have been pointed at the shooting, and one witness told the station he captured the shooter on his cell phone and turned the video over to police.



The manager of a wine shop across the street said he heard two bursts of gunfire, one apparently inside the restaurant and the second in parking lot.



"That was the last guy that got shot and that was it," he said, asking not to be identified. "I heard the shots, but when I looked everything was all done."



The manager said he called 911 and officers arrived within three to five minutes.



Other residents of the neighborhood said they heard about eight shots.



A woman who works nearby said she rushed to the driveway just south of the restaurant and saw a teenager on the ground, bleeding from the head and not breathing.



"The others had scattered already," said the woman, who did not want to be identified out of fear for her safety.



The woman said that as she approached the McDonald's she saw someone in a mask passing in the opposite direction. The person walked, then ran, away from the restaurant, she said.



Jose Perez said gang violence was common in the neighborhood when he moved there two decades ago. But in recent years, he has felt much safer, he said.



"Maybe like 10 years, haven't seen anything like this," said Perez, 32.



Students at Sullivan High School, which is two blocks from the McDonald's, said the school was placed on lockdown for at least half an hour this afternoon.



By the time the lockdown was announced, "we already knew why," said a 16-year-old sophomore.



Carr did not attend Sullivan, but he was well-known among students, said the sophomore, who asked to remain anonymous. Word of his death spread quickly on social media, with friends posting "RIP" messages on his wall, the sophomore said.



The McDonald's often attracts a young rowdy crowd, according to neighbors, who said there have been fights there. One neighbor pointed to what he said was a bullet hole on the north side of the building from a prior shooting.