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St. Louis, MO (KSDK) - Six teenagers, five boys and one girl, were arrested Friday afternoon for allegedly attacking a 51-year-old man a week ago.

The incident happened Friday, October 21 around11:40 p.m. in the 3300 block of South Grand Avenue, in front of a library.

St. Louis Mayor Francis Slay was one of the witnesses to the crime.

He saw a mob of teens leaving the scene and now the victim's family is demanding that something be done.

It's a game area teens have been playing in recent months, and it never ends well for the unsuspecting victims.

Charlie Quain said his uncle and neighbor was the fourth and most recent victim of the so-called Knockout Game; a game that's proven deadly in the past.

"About 18 teenagers jumped on him and started hitting him with bricks for no apparent reason," said Charlie Quain, the victim's nephew.

Quain said his uncle was walking home with a neighbor from the Schnucks on Grand at Gravois when he was beaten by a mob of teens. He was only a block from the grocery store, in front of St. Louis' Carpenter Branch Library. Nothing was taken and the victim was able to escape.

Mayor Slay just happened to be riding by with a member of his security team when he noticed the mob of teens, and then Quain's uncle lying unconscious. The Mayor called for help.

The juveniles were each charged with assault.

This was the fourth instance in recent months of the Knockout Game.

Meanwhile, a donation fund account has been established by the victim's employer, Joanie Thomas of Joanie's Pizzeria.

Checks should be made payable to Matt Quain Donation Fund, and can be deposited at any area US Bank, or mailed to Joanie's Pizzeria at 2101 Menard Street, St. Louis, MO 63104.

The fundraiser will be held at Joanie's Pizzeria on Wednesday, November 9 at 6 p.m.

For more information on the fundraiser, visit the Joanie's Pizzeria Facebook page.

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