An investigation has been launched into the time it took for Queen Mary Hospital to respond to a patient who alleged a surgeon talked on a mobile phone during an operation. The Hospital Authority Public Complaints Committee has asked the hospital's administration to submit a report on the case within two weeks. Committee member the Reverend Chu Yiu-ming said: 'We would like to see whether the complaint has been handled properly. It is unusual that the patient has yet to receive a proper response after lodging a complaint four months ago.' Mr Chu said the case had undermined public confidence in the Hospital Authority, doctors and medical professionals. He said the committee might interview the patient, a taxi driver, and medical staff involved after receiving the report. Chung Chi-cheong accused the surgeon of talking about buying a car on his mobile phone while removing a polyp from his colon. During the keyhole surgery on May 13, the doctor broke through the patient's colon wall. The patient underwent a second operation for inflammation of the abdominal wall. The surgeon gave his side of the story to the Professional Standards Committee on Wednesday. He has been suspended until the investigation is completed. Hospital chief executive Dr Vivian Wong Taam Chi-woon has said that the incident, if proven, was serious and the surgeon would be penalised. Mobile phones are banned in all public hospital wards and operating theatres to avoid interference with medical equipment.