A headteacher has appealed for information to help find a 15-year-old pupil who has now been missing for four days.

Maryam Mahmood was last seen at about 8.30am on Thursday, July 17 outside Norden High School on Stourton Street, Rishton where she was dropped off by a relative.

Maryam, of Great Harwood, suffers from asthma and is also believed to be fasting for Ramadan.

Norden headteacher Tim Mitchell said she is a 'very conscientious and studious' person and has appealed for her safe return.

He said: “Obviously we are extremely concerned over Maryam's disappearance and our thoughts are very much with her and her family at this time.

“Maryam is a very conscientious and studious young lady who has recently been appointed as one of our new group of Student Leaders.

“This serves to evidence the high regard with which Maryam is held by staff and students alike here at Norden.

“We would encourage Maryam or anyone with any information relating to her whereabouts to contact the police immediately.

Maryam is described as Asian, 5ft 3ins, slim, with long dark brown hair and wears glasses.

She was last seen wearing her school uniform, consisting of a purple polo shirt, black trousers, black shoes, with a blue rucksack.

Sgt Jill Maltman of East Police, said they are growing 'increasingly concerned' for her whereabouts and she could be 'anywhere in or out of Lancashire'.

She said: “I would like to reassure Maryam that she is not in trouble, her family are getting worried and just want her back home.

“If anyone has any information about Maryam including if they have seen her or they have any idea of where she may be, please get in contact.”

Anyone with information should contact Lancashire Police on 101 if they live in the county or alternatively, please call 01772 614444 quoting log number 542 of July 17.