out of london, now, greg talcott is working his sources as well. greg, what do you have?> reporter: yeah, bill. yeah, we're tracking this developing the past hour or so, the usually peaceful capital of norway turned into a war zone today. the center of it at least. at least one explosion, some people are claiming it's a bomb, at least one explosion, maybe two, occurring right near the government offices of the norwegian state. the offices include those of the prime minister of norway as well as other ministries of the government including the oil ministry. as you noted, bill, a scene of chaos with people emerging from the buildings with blood all over their bodies. we're getting varying reports of casualties, at least eight or ten, and some strong reports of damage, all windows according to one report. 17-story central government building of norway with all the windows blown out as well as fires raging on the top of a couple of the buildings. we've seen some aerial shots, bill, of the center of this city and be large plumes of smoke. again, this is usually a very peaceful

greg talcott's on the story live from london with the latest developments there. , greg. >> reporter: it is coming down to what executive james murdoch knew and when he knew about the full extent of the phone hacking scandal. now, he appeared before a committee of the house of parliament here on tuesday, and in that testimony he said that early on he had believed that the scandal was limited to maybe one reporter on "the news of the world" staff. he also said he was unaware of an e-mail which seemed to indicate at least one other staffer knew about this. now, last night the former editor of that newspaper and its former top lawyer said that murdoch was mistaken, that he was made aware of that e-mail. here's what british prime minister david cameron had to say today about this difference of opinion. >> clearly, james murdoch has got questions to answer in parliament, and i'm sure that he will do that. and, clearly, news international has got some big issues to deal with and a mess to clear up. >> reporter: parliament has been asking for a written clarification from

greg talcott on this story for us today live from london. hi, greg. >> reporter: hey, martha. investigators continue to look at that phone hacking scandal amid new reports of a possibly broader scope to that probe. this comes after a week of dramatic testimony, we've heard from the chairman, chief executive of news corp., rupert murdoch, on tuesday, and yesterday in the house of commons, british prime minister david cameron was on the hot seat. questions continue today about his dealings with news corp. executives. his government is sticking to the line there were no inappropriate discussions. also questions continue to be raised about cameron's hiring of andy coulson as his press chief. he was the editor of "the news of the world" newspaper at the time of the alleged phone hacking. he later left the cameron press post and was one of several people arrested for questioning in connection with this affair. all this as investigators reportedly are widening the net regarding possible media wrongdoing beyond "the news of the world" newspaper. police are said to be examining evidenc