Metropolitan Police Assistant Commissioner John Yates has resigned in the phone-hacking scandal in the United Kingdom.He checked the credentials of Neil Wallis before the Met employed the ex-News of the World executive, arrested last week over hacking allegations. Yates’s decision to quit comes after Commissioner Paul Stephenson resigned on Sunday.

The resignation of Paul, the most senior policeman in Britain, came after he faced criticism for the recruitment of Mr Wallis as a PR consultant. Wallis, a former News of the World deputy editor, was arrested and released on bail on Thursday on suspicion of conspiring to intercept communications. Meanwhile, British Prime Minister David Cameron is cutting short his ongoing visit to Africa and to join other ministers and parliamentarians in debating the phone-hacking issue in a special session of House of Commons on Wednesday.

Cameron said during a press conference in Africa today that he will make a statement in the House of Commons in the light of the hearings of two select committees tomorrow.

The Prime Minister is facing renewed questions over the phone-hacking scandal after the head of the Metropolitan Police resigned over the issue.

Parliament was due to go into recess after Tuesday afternoon, but the special session on Wednesday will discuss the Tuesday hearing of the Culture, Media and Sport Committee at which Rupert Murdoch, his son James and Rebekah Brooks are due to explain their actions on the issue.