New York AG pushing for investigation into rightwing mob's attack in Manhattan and looking for witnesses

New York state's Attorney General, Barbara Underwood, is looking for information about an apparent violent attack by extremist group The Proud Boys and will push for a "thorough investigation," she announced via Twitter on Friday night.

Following a Friday night event at the Metropolitan Republican Club of New York which featured a speech by founder Gavin McInnes, a mob of the extremists group was filmed attacking and beating several men in the street.

In video posted to Twitter, New York police are seen slowly approaching the scene of a beating.

New York cops arrested three people on the scene for "taking a backpack" and after the fight the Proud Boys reportedly posed for a group photo giving the "OK" sign.