A MAN has been charged after allegedly headbutting another male in an unprovoked attack in Helensburgh.

The assault is said to have taken place in West Clyde Street, near to James Street, at around 1.30am on Saturday, July 20.

Police say a 57-year-old man from Grant Street was traced, charged and reported to the procurator fiscal for allegedly assaulting the 34-year-old victim in the street.

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