A man has been struck over the head by an anonymous assailant.
The victim was walking along the Millbrook Walk area of Lisburn when he was attacked on Sunday at about 8.30pm.
The object the attacker hit him with is unknown.
He attended hospital where he received treatment to his injuries, which are not believed to be life-threatening.
Detective Constable Emme Wallace would appeal to anyone who may have witnessed this incident or who has any information in relation to it to contact Detectives at Reactive and Organised Crime at Lisburn on the non-emergency number 101 – call Crimestoppers anonymously on 0800 555 111.