Police are appealing for the public's help to track down a man involved in a mob attack on a police officer in the Waikato town of Kawhia.
The sole-charge officer was assaulted by at least five men while arresting a Kawhia 19-year-old in relation to warrants at the wharf in the Waikato town about 6pm on Friday, police say.
The officer used pepper spray and a taser, but was hit from behind, knocked to the ground and repeatedly kicked by a group of around five people.
His pistol was dislodged, his radio was taken and his taser was thrown into the water during the attack.
Members of the public and the Kawhia Volunteer Fire Brigade went to his aid, and police arrested a 19-year-old man, his 49-year-old father and a 21-year-old man.
The trio appeared in Hamilton District Court yesterday facing assault charges.
The eldest man was granted bail, while the other two were remanded in custody.
Police are asking for the public's help find a fourth man believed to have been involved.
Te Kuiti Detective Sergeant Steve Hudson says a team of police have been speaking to witnesses, and want to identify a man, wearing a blue top or shirt, who was seen running across the road to the wharf and knocking the officer to the ground early in the attack.
"We would very much like to speak to anyone able to offer any further information on this person, on his identity or what he looked like," Det Sgt Hudson said.
Police are appealing for anyone who may have taken photos or filmed the attack to come forward to help identify the man.
The officer is recovering at home from a sore hip, along with serious bruising and grazes to his face and arms.