Police are investigating another armed robbery, this time at Norlane.

A 15-year-old girl has told officers she was walking near the intersection of Thompson Road and Separation Street just before five on Saturday morning, with an 18-year-old male friend.

She says the pair were approached by two armed men who made threats before grabbing her handbag.

Police are asking anyone who knows anything to get in touch with Crime Stoppers on 1 800 333 000 or go to the website at www.crimestoppers.com.au.