A senior constable was treated for lacerations and bruising after he was tripped by a man while attempting to make an arrest in Oxley Vale about 7.30am on Tuesday.

Two men and a woman have been charged in connection to the incident while a fourth is still on the run.

Oxley Inspector Matt French told The Leader police were called to reports of a brawl near the corner of Drummond Rd and Westow Cr and were confronted by a hostile and aggressive group.

He said officers tried to calm the group before the officer was allegedly assaulted and extra back-up called.

”It will be alleged the 18-year-old male pushed him before fleeing on foot,” he said.

”Another male tripped the officer causing him to fall on the roadway and he suffered grazing and bruising.”

The officer was treated by Ambulance paramedics at the Tamworth Police Station and completed his shift.

“It’s a disgraceful act to assault a police officer or any other emergency service worker who are doing their job and trying to keep the community safe,” Inspector French said.

Police made three arrests on Tuesday and are still searching for another man involved in the altercation.

The suspect is described as Aboriginal in appearance with a thin build, aged in his early 20s and was wearing light shorts, a black shirt, a hoodie and had a nose piercing.

Police said a 42-year-old man was arrested in Oxley Vale by police and charged with hindering police and behaving in an offensive manner.

He was granted conditional bail to front court in February, along with the 40-year-old woman who was charged with hindering police and behaving in an offensive manner.

The 18-year-old man was charged with assaulting police and resisting arrest.

He was refused bail by police and appeared in Tamworth Local Court on Tuesday afternoon where he was granted conditional release to appear in court next month.

Police are urging anyone with information on the fourth male to come forward.