A desperate search is underway to locate a 15-year-old girl who has been missing since New Year's Eve.

Sophie O'Hagan was last seen leaving her home address at Balderston Cottages in Linlithgow at around 6.20pm on Tuesday, December 31.

She has not been seen or heard of since, and police say there is growing concern for her welfare.

Sophie is said to have links to the Glasgow and Lanarkshire areas, and it is thought she may be using trains to travel.

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She is described as being 5ft 5ins of a slim build with long auburn coloured hair. The image provided by police shows her to have pink hair, but this has since changed.

At the time she went missing, Sophie is believed to have been wearing a black jumper, blue jeans with grey trainers.

Inspector Andrea Campbell from Falkirk Police station said: “Sophie has not been missing for a number of days and we are becoming increasingly concerned for her welfare and are keen to locate her as soon as possible.

“We have a number of police resources out looking for Sophie and know she has been in both Cumbernauld and Uddingston since she was reported missing on Tuesday, December 31.

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“I would urge anyone who may have seen Sophie to contact us. Similarly, if Sophie is reading this, let us know that you are safe and well.”

Anyone with information is asked to contact Police Scotland on 101, quoting 2076 of Tuesday, December 31, 2019.