Anji Dean
The parents of missing teenager Anji Dean fear she has become a victim of sex trafficking Facebook

A missing American teenager left a chilling message in her diary before she vanished two weeks ago, it has been reported.

Anji Dean, 17, from Camas in Washington, wrote in her journal: "If you're reading this, I'm either missing or dead."

The teenager's parents told news channel KGW that they fear she has become a victim of sex trafficking, as nobody has heard from the Miss Dean since she disappeared on 23 June. They added that it is unlikely that she ran away.

Speaking to CNN, Dean's mother Lynda Jorgensen said: "We have no idea where she is or who she's with. She can't be doing this on her own, so we're really, really afraid for her."

Jorgensen added that in the months prior to Dean's disappearance, she had indicated to teachers and school counsellors that she was involved in something she was not able to get out of.

On the day she vanished, Miss Dean sent a text message to her boyfriend saying she had got into a difficult situation and that someone was threatening to kill her and her family.

In the hours before Anji vanished, a neighbour told NBC that she saw Miss Dean getting out of an older, blue Volvo filled with people. The driver was described as African-American and aged between 25 and 35, with a goatee beard.

The teenager left her home near 192nd in Camas, a city in Clark County, between 9pm and 10:30pm (local time) on 23 June. Anji left behind her wallet, bank cards, her glasses and clothes.

"It scares the bejesus out of me because she didn't just run off on her own," Jorgensen said.

"She only took what she was wearing, which was black running tights, a white racer-back tank top and white Nike shoes."

Authorities also found a mobile phone that Miss Dean's parents did not know she had, which is currently being analysed.

The President of the National Women's Coalition against Violence and Exploitation is working with the family and detectives on the case.

"I don't believe she left thinking she was running away. I believe, after speaking with law enforcement and the detective on the case, that we may be dealing with a human-trafficking situation here in Clark county," said NWCAVE president Michelle Bart.

You can also follow the case on the Help Find Anji Facebook page created by the family.