David Cameron, prime minister, condemns the News of the World over phone hacking allegations and says investigation must be without fear or favour:
"If they are true this is a truly dreadful act and a truly dreadful situation.
"What I've read in the papers is quite shocking, that someone could do this knowing that the police were trying to find this person and find out what happened.
"There is a police investigation into hacking allegations ... they should investigate this without any fear, without any favour, without any worry about where the evidence should lead them.
"They should pursue this in the most vigorous way that they can in order to get to the truth of what happened.
"That is the absolute priority as a police investigation."