Police are trying to trace a woman in Leeds.
Officers want to speak to Katherina Gill, who is around 63-years-old.
She is thought to have lived in the Burley area of Leeds in the late 1970s.
Police said the woman is not missing and is not a suspect in a crime.
It is believed she is now aged around 63 and that Gill was her maiden name. She may have married or changed her name now.
A West Yorkshire Police Spokesman said: "Very little is known about her and officers have been making extensive enquiries to trace her.
"These have so far failed and so the Force are taking the unusual step of making an appeal."
Anyone with information is asked to call police on 101.