David Cameron has said that if his former spin chief Andy Coulson did lie about his alleged involvement in the phone hacking scandal then it would be a matter for the police.
Less than a week after the prime minister said Coulson was still a friend, he told PMQs: "If it turns out he lied it won't just be that he shouldn't have been in government, it will be that he should be prosecuted."
Cameron admitted that his chief of staff Ed Llewellyn had been warned about Coulson hiring private investigator Jonathan Rees whilst he was in opposition. However he said that this message was not passed on to him.
But Ed Miliband said this evidence "casts serious doubt on Mr Coulson's assurances", asking if the prime minister will take action against Llewellyn.
Cameron said the phone hacking scandal was a "firestorm" that had engulfed parts of the media - however with questions over his appointment of Coulson, it is a firestorm that could engulf him too.
"I think we have to be clear about what is happening here. There is a firestorm, if you like, that is engulfing parts of the media, parts of the police and what we must do in the coming days and weeks is think above all of the victims, like the Dowler family who are watching this today and make doubly sure that we get to the bottom of what happened and that we prosecute those who are guilty."
As the family of Milly Dowler watched from the public gallery, the prime minister also called for News International to get their own house in order instead of attempting to take over BSkyB.