(NewsNation) — Authorities are investigating an attack on officers from the New York Police Department that happened over the weekend near Times Square.

Police had been trying to move an unruly crowd outside the Chandler Building when, according to an NYPD spokesperson, one person became confrontational.

Security footage shows NYPD officers struggling to keep a hold of someone in a yellow shirt. They then hit the ground, and the other men pile on top of them, raining down blows and kicks.

Four men were arrested and charged Saturday with assault of a police officer, gang assault obstruction, obstructing government administration and disorderly conduct. A fifth man was charged Monday with attempted assault on a police officer and gang assault.

All five were released without bail, prompting criticism of New York’s bail laws. Law enforcement is still searching for seven others in connection to the attack.

The NYPD officers only sustained minor injuries, including general body pains and one with a laceration to the nose. They were treated on the scene.