POLICE are trying to trace an attacker who allegedly hit a man with a rock in Greenock.

The suspect was initially restrained by those at the scene but managed to break free before officers arrived. 

The incident happened within a car park at Nicolson street on Friday around 1:10pm.

Sergeant Jason Logsdon said: "Enquiries continue to gather evidence and trace the suspect."

Anyone with information that could help police with the inquiry is urged to call 101 quoting incident 1836.

Meanwhile, a man was allegedly head-butted on Dalrymple Street, Greenock, around 1.30am on Saturday.

A 31-year-old man was arrested and charged with assault and is expected to appear at court at a later date.