Missing 14-year-old possibly in Geelong

Missing 14-year-old Bonnie Farquhar

A missing 14-year-old girl who disappeared almost three weeks ago could be in Geelong, according to police.

Police on Monday called for public help to find Bonnie Farquhar, who was last seen leaving her Coburg address about 11.55pm on January 17.

Investigators described Bonnie as 160cm tall, with a medium build, brown hair and brown eyes, and held concerns for her welfare due to her age.

She was last seen wearing a grey hooded jumper, black leggings, white Nike runners, and was carrying a black handbag.

Investigators released an image of Bonnie in hope someone might be able to provide information on her current whereabouts.

She was known to frequent the Geelong area, police said.

They urged anyone who sees Bonnie to phone Fawkner Police Station on 9355 6000.