A 16-year-old girl is facing charges for allegedly assaulting a police officer, after an out-of-control party in Melbourne's south-east.
Up to 400 teenagers packed a quiet street in Glen Waverley on Friday night, before moving onto a McDonald's, neighbours told 9NEWS.
Footage has emerged of a police officer pinning a teen to the ground outside the takeaway shop.
The boy's friends then become abusive and one hurls a drink at the officer's back.
"They just grabbed one of the guys for saying the police had little man syndrome... the police officer just grabbed the guy and just put him on the ground saying he was under arrest until he showed ID," witness Mo Jaffer said.
Neighbour Mandi Greenwood was one of many who reported the party to police.
"It just looked like an exodus scene or something, there would have been hundreds just walking down the street," she said.
Police have confirmed that the Facebook-organised event had a $10 cover charge and no adult supervision.
A 16-year-old boy is also facing charges for drinking in public.
