Two teens were attacked at a Memorial Day carnival outside a North Side Chicago school, authorities said, and one of the incidents, which appeared to be a massive brawl, was caught on camera by a witness who posted it to social media.



The first incident happened around 8:30 p.m. Saturday, when a 15-year-old boy was beaten by a group of 15-20 people at the carnival at Lane Tech College Prep High School, 2501 W. Addison St., according to Chicago authorities.

The teen was allegedly trying to help a friend stop the group from taking a bike when he was beaten to the ground, police said. He was taken to Lurie Children’s Hospital where his condition was not immediately known.

Video posted to social media shows the incident unfold. In it, a large crowd of people can be seen running and fighting in a field near the event.

Video posted to social media shows a brawl happening at a Memorial Day carnival at Lane Tech College Prep. Police say a 15-year-old boy was beaten by a group of 12-20 people.

A second incident was reported less than two hours later when a 17-year-old was punched and robbed by a small group of males, according to police.

A 16-year-old suspect was taken into custody after police tracked a stolen cell phone in the incident. Further information on the suspect or any potential charges wasn’t immediately released.

Police would not confirm if extra security would be present following the incidents.

The carnival was scheduled to run until 10 p.m. Friday through Sunday and from noon to 8 p.m. on Monday.