Only seven of the 1,135 statements videoed in serious crime cases over the past five years were not admitted by courts, police said yesterday. Senior Superintendent To Chun-wai said video interviewing had increased efficiency and transparency in police handling of statements and could help eliminate allegations of malpractice. 'Less than 10 per cent of these statements were challenged by the defendants,' he said. An extra 49 video interviewing rooms were expected to be set up by the end of the year, bringing the total to 60, he said. Law Yuk-kai, director of Hong Kong Human Rights Monitor, said cameras should be installed in every interview room. 'All suspects' requests to have the interview videotaped should be met,' he said. Mr Law said a 1995 Hong Kong University survey found 18 per cent of 162 confession statements were not admitted by magistrates after defendants challenged them.