Tragedy outside John Jay.

https://www.dnainfo.com/new-york/20170628/park-slope/john-jay-high-school-campus-serious-incident?utm_source=Park+Slope+%26+Windsor+Terrace&utm_campaign=a5958cddac-Mailchimp-NYC&utm_medium=email&utm_term=0_3e210893a8-a5958cddac-135623709

A 20-year-old was arrested Wednesday for allegedly stabbing a teen in the back and hand, biting another teen in the chest and slashing the ear of a man in front of the John Jay educational campus while a group of junior high student bystanders were caught in the melee, according to police and witnesses.