A 14-year-old girl has gone on the run with her ex-boyfriend and their daughter.

Tinishya Marshall disappeared with 11-month-old Sophie and they are believed to be in the company of Howard Norman – the little girl's 16-year-old father.

Police believe Tinishya and Sophie may be in the Devon area.

Concerned friends and relatives have set up Facebook groups appealing for Tinishya to get in touch and have printed posters pleading for information.

Tinishya's mother Liz Marshall begged her daughter to get in touch.

Avon and Somerset Constabulary said Tinishya went missing from the Greystoke Avenue area of Southmead, Bristol, on September 3.

She told people she was going out to the shops and took her daughter in a pink pram.

A relative who spoke to her at the time reminded her that Sophie's feed was due. At 3.30pm mother and daughter were spotted in Greystoke Avenue but have not been seen since.

Tinishya is 5ft 2in, of heavy build with dark brown shoulder length hair, which is usually tied up.

When last seen, she was wearing a black velour tracksuit with a white top underneath.

Her daughter was wearing a red velour tracksuit.

A force spokesman said: "There is growing concern about the welfare of the baby as none of the child's belongings or change of clothes were taken, except for her pink pram."

Howard is aged 16, 5ft 5in, with short mousy brown hair and was wearing black tracksuit bottoms, a white T-shirt and white trainers.