News Corp owner Rupert Murdoch and his son James will appear before Britain's parliament Tuesday to answer questions about the phone-hacking scandal at the now-defunct News Of The World tabloid.

The Sunday paper shut down last week after allegations that reporters illegally accessed thousands of cellphone voice mails of celebrities, politicians, rival journalists and even murder victims. Former editor Rebekah Brooks, who was arrested Sunday, has also been called to testify.

The scandal has forced two of London's top police officials to resign. Assistant Police Commissioner John Yates quit his job Monday less than a day after London Police Chief Paul Stephenson quit, following criticism about police handling of the phone-hacking investigation. British police have also been accused of accepting bribes from journalists.

Meanwhile, British Prime Minister David Cameron cut short an African trip to deal with the growing scandal. Parliament was to begin a six-week recess Tuesday, but Mr. Cameron has asked lawmakers to reconvene Wednesday for a special session.

In the United States, the FBI has begun a probe into whether employees of Murdoch's media conglomerate News Corporation tried to hack into the phones of victims of the September 11 terrorist attacks and their families, or tried to bribe police for information.

Murdoch's company has several lucrative news and entertainment outlets in the United States, including the country's top business newspaper, The Wall Street Journal, and a major television outlet, Fox News Channel.