Police are appealing for help, after a man ran over a member of the public in retaliation for confronting him during an assault.
About 9:30am Wednesday, a good Samaritan intervened to help a woman, after he spotted the man assaulting her on Major Drive in Lower Hutt.
The attacker then got into his car - a silver Mazda 6 - and drove it towards the man who had intervened, knocking him off his feet and dragging him a short distance up the road.
The offender continued driving and left the scene, and is yet to be found by police.
The member of the public is now recovering from his injuries, but police say he was lucky not to be more gravely injured.
"The good Samaritan suffered head injuries and is now recovering at home," said Detective Sergeant Lee Underhill.
"He was lucky to not have received critical injuries."
Police ask anyone with any information about the incident to contact Lower Hutt CIB on (04) 212 3934.
They also say that, while the bystander's actions were courageous, the best course of action is often to call 111.
"The victim's actions and intentions were admirable, and show that our community is full of people who will not stand by and watch this type of violent behaviour," a spokesperson said.
"However, we encourage witnesses to this kind of behaviour to call 111 and ask for police in the first instance, so as not to put their own safety at risk."