Man sexually assaults girls twice in weeks

A Melbourne teenager has been sexually assaulted in public by the same man within weeks.

The girl, 16, was sitting at a Craigieburn bus stop on January 2 with a friend when a man in his 60s sat between them, took a selfie and then sexually assaulted the girl, police say.

The two girls were in Craigieburn Gardens on January 20 when the man approached them again and sexually assaulted both of them.