The Suffolk County Police Benevolent's Association released new video Thursday of people slashing a police car's tires during an illegal gathering in Islip.
They say it happened early Sunday under the Sunrise Highway overpass off Commack Road.
In a post on social media, the PBA says the crowd also confronted the police officer.
Police say over 100 people were at the illegal gathering where a car was set on fire and other officers were injured.