A man and three teenagers have been charged following an alleged assault at a service station in Belmont early this morning.

About 12.45am (Sunday 13 December 2015), emergency services were called to the service station on the Pacific Highway, following reports of an assault.

Police will allege that two men, aged 20 and 18, were walking past the service station, when two males and a female, exited a van and assaulted them, before fleeing.

Following the assault, the 20-year-old man was treated at the scene by Ambulance Paramedics, before being taken to John Hunter Hospital with serious, but non-life-threatening injuries.

A crime scene was established by officers from Lake Macquarie Local Area Command, and an investigation commenced.

A short time later, officers attended a home on Dwyer Chase, Eleebana, and arrested a 19-year-old man, a 17-year-old boy, and a 17-year-old girl.

The trio were taken to Belmont Police Station and were each charged affray and assault occasioning actual bodily harm.

The 19-year-old man was refused bail and is due to appear at Newcastle Local Court tomorrow (Monday 14 December 2015).

The 17-year-old boy was granted conditional bail to appear at Children’s Court on Monday 21 December 2015. The 17-year-old girl was granted conditional bail to appear at Children’s Court on Monday 4 January 2016.

About 12.30pm (Sunday 13 December 2015), a 17-year-old boy attended Belmont Police Station where he was arrested.

He was later charged with assault occasioning actual bodily harm, common assault and affray. He was granted conditional bail to appear at a Children’s Court on Monday 18 January 2016.