Britain's inquiry into media ethics says it has summoned a political blogger to testify after evidence due to be submitted by Tony Blair's ex-communications chief was leaked.
The inquiry, led by senior judge Brian Leveson, said Sunday it would call Paul Staines, who blogs under the name Guido Fawkes.
His blog on Sunday published a 16-page document that Blair's former press chief Alistair Campbell was due to submit as evidence ahead of a hearing on Wednesday.
Campbell wrote on his Twitter page that he had been "genuinely shocked" that his written testimony leaked.
In the document, he discusses fears that the cell phones of Blair's wife Cherie, or one of her friends, may have been hacked. However, Campbell acknowledges he does not have evidence to support that fear.