The search for a missing 14-year-old Tasmanian girl has entered its third week, with authorities yet to find the missing teen.
Shyanne-Lee Tatnell went missing on Sunday, April 30 around 8:35pm near the North Esk River in Launceston.
After extensive forensic testing, Police have confirmed several phones located in the river last week were not connected to the teens disappearance.
Members of the public have been urged to come forward with any information that may help the investigation.

Shyanne is described as being about 160cm tall with a slim build and blonde hair.
She was last seen wearing bike shorts and a cream hoodie with dark writing across the chest and shoulder.
Anyone with information should contact police on 131 444 or Crime Stoppers Tasmania, where information can be provided anonymously.

