The phone hacking scandal in Britain claimed another high-profile casualty on [July 18] when John Yates, the deputy commissioner of the Metropolitan Police in London, resigned his post. His departure comes a day after the country's top police officer quit and Rebekah Brooks, the former chief executive of Rupert Murdoch's News International, was arrested on suspicion of illegally intercepting phone calls and bribing the police. Such is the severity of the crisis swirling around the Murdoch empire and Britain's public life that Prime Minister David Cameron cut short an African trip on Monday and, bowing to opposition pressure, called a special parliamentary session on Wednesday to debate the widening scandal. Mr. Murdoch, his son James and Ms. Brooks are set to testify before a parliamentary inquiry into the scandal on Tuesday. The home secretary, Theresa May, said on Monday that the country's Inspectorate of Constabulary, a police oversight body that reports to her, would investigate possible corruption in the links between the police and journalists. Mr. Yates has been criticized for his decision not to reopen the investigation even though the police under his command possessed some 11,000 pages of largely unexamined evidence. I'm not going to go down and look at bin bags," Mr. Yates said.