PARTYGOERS were horrified when gatecrashers began assaulting one of the guests at a 17th birthday party in Cranbourne.
Police said about 30 guests were at the party in Endeavour Drive when a group of at least eight teenage boys crashed the party.
When they were asked to leave by the party’s host, they began assaulting a guest.
One of the alleged offenders, a 16-year-old Cranbourne West boy, was located by police at the scene.
He will be charged with affray by summons.
The injured guest, a 16-year-old Cranbourne West boy, was taken to hospital after suffering a broken nose, possible broken cheekbones, and lacerations and swelling to the face.
Inquiries are still continuing to locate the other offenders.
Anyone with information is asked to contact Senior Constable Glenn Dunn at Cranbourne CIU on 5991 0661 or Crime Stoppers on 1800 333 000.