A MUM has asked for Costa Coffee staff to be on the alert after her seven-year-old son vanished from Poland with her estranged Bolton husband.

Mani Dad was living with his mother Leyla Dad, aged 33, in Kielce, Poland, when he disappeared early this year.

He is thought to be in the UK with his father Zayn Dean, a 47-year-old property developer, also known as Dholtana Dad, who grew up in Bolton.

The family had lived in Britain together before moving to Poland.

Ms Dad has spoken to Mani on the telephone several times and has launched family court proceedings in a bid to find her son.

She says Mani told her on the phone that he has visited Costa with his father.

Ms Dad said: "He loves Costa - we often used to take him when we lived in England.

"He says he's been to Costa with his dad and that wouldn't surprise me.

"I would urge Costa staff and customers to look carefully at the pictures and let police know if you think you've seen them.

"People would probably notice them. Zayn is a big guy. He'd be talking on the phone. Mani would probably be playing on a computer."

Ms Dad says she thinks Mr Dean and Mani could be living in a village.

Mr Dean, whose family is from Pakistan, grew up in Bolton and Bradford, and has links with Birmingham, Luton, Bedfordshire, Essex and London.

His wife said she cannot find the words to describe her pain.

She said: "I know Mani's with his dad but I'm sure he's not going to school and he's missing me.

"I have to find him. I just don't know what to do."

Ms Dad - who uses her middle name, Paulina - has already made a direct appeal to Mr Dean and written an open letter to Mani, saying: ''I promise we will be together again soon, my baby.''

Lawyers say she has begun legal proceedings under the terms of the 1980 Hague Convention on Civil Aspects of International Child Abduction.

Solicitor Katherine Res Pritchard, from Dawson Cornwell, said: "'Have you seen them? Have you perhaps seen them in a playground, in a park, at a theme park, in a swimming pool, at a zoo, in a cafe? Have they been to your school, have they seen a doctor or a dentist?

''Someone, somewhere must have seen Mani. We need to find him and make sure he is safe. He needs to be reunited with his mother.

''This is a very serious matter, so I urge anyone out there who may know something about Mani's whereabouts to please come forward and share that information with us.''