POLICE say the disappearance of a 78-year-old Oxford woman is 'totally out of character' as concerns grow about her welfare.

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Maja O’Brien was last seen in Wytham Street, off Abingdon Road, on Wednesday, at around 9pm.

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Thames Valley Police say she failed to show up for a concert on Thursday night and may have gone out on her bicycle.

She is around 5ft 6ins tall, of average build, with short grey hair and brown eyes.

It is not known exactly what clothing she was wearing but it is believed she could be wearing a red coat and be carrying Sainsbury’s plastic bags.

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Ms O'Brien is known to frequent Hinksey Park, also off Abingdon Road, and the Four Pillars swimming pool on her bicycle, which has a basket on the front.

Investigating officer Inspector James Sullivan, from Cowley police station, said: “The disappearance of Maja is totally out of character.

“She did not attend a concert with her friends last night and is normally very punctual and reliable.

Oxford Mail: Wytham Street where Maja O'Brien was last seen. Picture via Google MapsWytham Street where Maja O'Brien was last seen. Picture via Google Maps

“Her bike is not at her home address so we believe she may have left on her bicycle.

"Police, along with her friends and family are very concerned for her welfare."

He continued: “If you think you may have seen Maja or you know where she may be, please contact Police on 101 quoting the reference number 1528 (28/3)

“Maja if you are reading this, please get in touch and let us know you are safe.”