Volunteers have started searching Plymouth on foot in the hope of finding missing teenager Bobbi-Anne McLeod.
The 18-year-old has not been seen since around 6 pm on Saturday 20 November.
She left her home in Leigham to get a bus from Sheepstor Road into the city centre to meet some friends, but she did not arrive.
Police have now cordoned off the bus stop and an active search is underway for Bobbi-Anne. Officers are scouring the area while the police helicopter searches from above.
Police say her mobile phone has been discovered. Her earphones have also been found near the bus stop in question.
Volunteers have also met at the Asda superstore on Leypark Drive to conduct a search on foot.
The search party has been organised via a Facebook group which has more than 8,500 members.
In a statement released yesterday afternoon, Detective Inspector Matt Lawrence said: "We believe she was due to get a bus from Sheepstor Road into the city centre to meet some friends, but she didn’t show up."
What does Bobbi-Anne look like and what was she wearing?
Police describe Bobbi-Anne as 4ft 11ins tall and of a "slight" build.
She has green eyes, straight hair which is shoulder-length and ear piercings.
She was believed to be wearing grey Nike jumper, black ripped jeans and fishnet tights, and light Nike trainers.
DI Lawrence added: “We would like to hear from anyone who has seen Bobbi-Anne since she left her home on Saturday or from anyone who knows of her current whereabouts.
“Bobbi-Anne may be reading this appeal; if you are, then please get in touch; You are not in trouble; we just need to know that you are safe and well.”
Anyone who has seen Bobbi-Anne or who may have any information to assist the police is asked to contact 101 quoting log number 879 for Saturday 20 November.