AN investigation has been launched after an altercation over an alleged dog attack in Helensburgh.

The incident between two dog walkers took place around 11.30am on January 6 at a dirt path running near Golf Hill Drive.

It is alleged that a man's Alsatian dog off its lead assaulted a woman's two labradors.

Police are now appealing to members of the public for information into the argument.

Anyone with information is asked to contact PC Mathieson at Helensburgh Police office on 101.