BROOKLYN - A 72-year-old woman suffered a blow to the back of her head in what may be another assault linked to the so-called "knockout" game.

Authorities say the elderly victim was punched while walking on Flatlands Avenue in East New York Monday. She was rushed to Brookdale Hospital, treated and released.

The attack happened at nearly the same time that Brooklyn leaders were publicly denouncing the violence and calling on community members to help. The dangerous game has become a nationwide trend where players are said to punch unsuspecting victims with the goal being to knock them unconscious.

Police have also made another arrest in connection to one of the alleged attacks in Brooklyn. They say a 13-year-old boy faces assault and aggravated harassment charges in connection with the attack of a 12-year-old boy in Crown Heights earlier this month. NYPD Commissioner Ray Kelly says they are still trying to determine whether the attack was a hate crime.

Amrit Marajh, 28, was charged over the weekend for allegedly punching a 24-year-old man in Borough Park.