A man in his 50s was walking in the Mountpottinger Road area of east Belfast yesterday (Monday) when he was assaulted on the street by another man.
The incident happened around 1.45pm.
He sustained a number of head and facial injuries in the attack which continued until members of the public intervened.
He was subsequently taken by ambulance personnel to hospital for treatment. His injuries are not believed to be life-threatening at this time.
Detective Sergeant Doherty said police received a report of the assault around 2.20pm.
“I am appealing to anyone who saw what happened to get in touch with police on the non-emergency number 101, quoting reference number 721 of 22/10/18,” added the Detective Sergeant.
Alternatively, information can also be provided to the independent charity Crimestoppers on 0800 555 111 which is 100% anonymous and gives people the power to speak up and stop crime.