Mr Azad, 39, is paid an annual salary of between £62,000 and £78,000. He is an independent watchdog on the Mayor's activities, reporting back to the Assembly. He was arrested under the Protection of Children Act 1978 and taken to a central London police station for questioning. A number of items including computer equipment were taken from his home. He has been released on bail and is due to reappear before the police next month.