A mother who received a text message saying she would never see her teenage daughter again today appealed for her safe return.

Two days after hairdresser Donna Duplock, 18, disappeared after visiting a night club in Brighton, her mother Linda received a text message from her phone saying: "You will never see your girl again now that I have her."

Donna also called her older brother, saying, "Wayne, please help me," before the phone went dead.

Mrs Duplock and her son tried three times to ring the mobile but each time it was answered and cut off without anyone speaking.

Today she pleaded with her daughter to get in touch, saying: "Donna, if you could just contact the police or myself or your work colleagues, just to let us know you are okay."

A Press conference at Brighton police station was cut short when Mrs Duplock broke down in tears and had to be led away.

Detectives say 5ft 2in tall Donna may have been kidnapped.

She has not contacted her family since she kissed her mother goodbye at a Shoreham taxi rank at 11.15pm last Tuesday before travelling to the Event club in Brighton.

The following day, a woman matching Donna's appearance was spotted sitting on a bench near the King Alfred leisure centre in Hove with a middle-eastern looking man in his twenties, who was wearing a green Barbour style jacket. Donna has not been seen again.

Acting Detective Chief Inspector Sally Simmonds said: "The person who saw Donna says she was 95 per cent sure it was her, and said she appeared happy.

"But we cannot rule out the possibility she has been kidnapped.

"We are hoping she is safe and well and we would like her to contact us, or the national missing persons helpline."

Donna, who works at a hair salon in Lancing, is described as plump with fair skin, brown eyes and short, dyed red hair.

The night she went missing she was wearing a knee-length black skirt, a black vest top and chunky black shoes with a leather jacket.

She has a tattoo of a dolphin on her chest and Chinese writing on her upper right arm. She wore gold rings on both hands.