UPDATE, 12:30 PM: The FBI, after calls from politicians to look into whether News Corp employees hacked phones of 9/11 victims like News of the World journalists are accused of doing to London bombing victims among others in the UK, have opened an investigation into the matter, the Wall Street Journal is reporting. An FBI spokesman declined to comment. Since the phone-hacking scandal came to light earlier this month in the UK, reports have surfaced that News of the World journalists also tried to breach phone records in the U.S.

PREVIOUS, 10:42 AM: Rupert Murdoch and his son James agreed today to appear before a committee in the UK’s House of Commons on Tuesday to give evidence about the phone-hacking scandal that has shuttered the conglomerate’s News of the World newspaper and ended its massive bid for BSkyB. The pair had originally suggested alternate dates to appear at the meeting, resulting in the Commons’ Culture, Media and Sport committee issuing official summonses — a rare step. The Murdochs got the message and agreed to Tuesday. Rebekah Brooks, the CEO of News of the World parent News International, already had said she would appear. Meanwhile, as the drumbeat grows to investigate News Corp’s U.S. news operations for similar illegal activities, in London ex-News of the World executive editor Neil Wallis became the ninth person to be arrested in connection with the phone-hacking probe. The BBC reported he was taken into custody Thursday on suspicion of conspiring to intercept communications.