A mainland doctor who was not allowed to practise in Hong Kong was found guilty yesterday of performing an illegal abortion on a girl, 15. The jury in the Court of First Instance deliberated for less than four hours before reaching a six-one verdict to convict Lai Pui-heung, 52. Lai had claimed she had served as a nurse when the girl underwent an operation on April 5 last year. She testified in court that a Dr Cheung performed the abortion. However, the doctor was never located as Lai said she had no idea of her whereabouts. Lai had produced a photograph of a woman she claimed was Dr Cheung. Lai had pleaded not guilty to a charge of using an instrument or other means with intent to procure miscarriage. The girl, now 16, identified Lai in court as the person who operated on her in Lai Yee Clinic in Sheung Wan. She said she was promised a 'quick' operation for $2,400. The girl also said Lai warned her to keep the procedure secret as it was illegal. The case came to light later the same month when the girl was admitted to hospital with abdominal pain. Deputy Judge Louis Tong Po-sun is to sentence Lai on August 17, pending a background report. She is on bail.