Teens Film Brutal Attack on Another Teen, Posted It on Facebook. Guess Where the Suspects Are Now.

Teens in St. Louis filmed what appears to be a random attack on another teen walking down the sidewalk and posted the footage to Facebook. Within two days, two suspects were in police custody.

According to the KTVI-TV, the incident happened Sunday in the middle of the day along a busy road in the Missouri city. Cellphone video taken the assault, which was later posted and then removed from Facebook, shows one teen punch the another. The victim, who fell to the ground, was then beat upon by other teens as well.

Image source: YouTube

Image source: YouTube

The news station, which did not include the audio of the video in its report, said the teens could be heard laughing in the footage.

Watch KTVI's report to see the attack:

By Tuesday, the St. Louis Metropolitan Police Department said it had a 15-year-old and 17-year-old in custody in connection with the assault. The investigation into the incident is ongoing. The victim, KTVI reported, is doing well health-wise.

Earlier this year, there was an apparent resurgence of the so-called "knockout game," where teens would attack someone on the street at random. It is unclear if this attack was truly random or if other circumstances not shown in the video prompted it.