British Prime Minister David Cameron on Tuesday announced the deployment of 16,000 police officers on the streets of the UK capital to prevent riots and looting on the fourth consecutive night.

Riots and looting spread to other parts of London on the second night on Sunday after Tottenham in north of the city saw violence erupting over the dea-th of a 29-year-old man in Saturday’s police shooting.

Violent riots erupted in north London on Saturday night after a demonstration against the fatal shooting of a local man by the police on Thursday.

The investigation into the phone-hacking scandal is likely to expand its remit beyond the News International titles to other newspapers, BBC Four reported on Thursday. However, the Met police refused to officially confirm the news.

Prime Minister David Cameron on Wednesday faced hostile Opposition Labour MPs, who grilled him over his close relationship with the News International executives, over the phone-hacking scandal.

News Corporation chairman Rupert Murdoch, who looked frail and weak, and his son James apologised to Britons for phone hacking at the hearing of the House of Commons select committee on culture, media and sport on Tuesday afternoon.

British Prime Minister David Cameron cut short his trip to Africa on Monday as the crisis in the Metropolitan Police deepened with the back-to-back resignations of commissioner Sir Paul Stephenson and assistant commissioner John Yates over the phone-hacking scandal.

Rebekah Brooks, 43, former chief executive of News International, was arrested by the Metropolitan Police on Sunday afternoon in London in connection with the investigation into the phone-hacking scan

News International’s chief executive Rebekah Brooks finally resigned on Friday after almost a fortnight of pressure to quit over the phone-hacking allegations engulfing the Rupert Murdoch publishing company.

Media magnate Rupert Murdoch was on Wednesday forced to withdraw his News Corporation’s bid for a complete takeover of British broadcaster BSkyB. News Corp. wanted to increase its stake from 39.1 per cent to 100 per cent in BSkyB, which owns Sky TV.