Broadcasters BBC, ITV, Sky and Channel 4 - have announced they intend to press ahead with previously-announced plans for three televised leaders' debates during the general election campaign, despite David Cameron saying he will only take part in one.
A court official has said Brazil's Supreme Court has agreed to investigate dozens of politicians, including the top leaders of Congress, in connection with a multibillion-dollar kickback scam at state-run oil company Petrobras.
Senate President Renan Calheiros and Eduardo Cunha, the speaker of the Chamber of Deputies, are both members of President Dilma Rousseff's governing coalition.
Other prominent politicians on the prosecutors' list include ruling Workers' Party Senator Gleisi Hoffmann and a former Energy Minister. Under Brazilian law, elected officials can only be tried by the Supreme Court.
An US missionary who was kidnapped in central Nigeria in February has been safely released to authorities and church leaders, her Free Methodist Church said in a statement.
Reverend Phyllis Sortor, a Free Methodist missionary to Nigeria, was safely released in Nigeria on Friday evening local time into the care of authorities and church leaders, the church said. She was abducted on February 23.
The United Nations has condemned as a war crime its assault on the relics of one of humanity's earliest civilisations.
For almost two thousand years the Assyrian empire ruled over a huge area of Iraq and Syria, with the ancient city of Nimrud at its heart.
As Paul Davies reports, Islamic State terrorists are said to have reduced Nimrud to rubble.
ITV News' Paul Davies reports:
A man suspected of trying to hack into the United States Department of Defence was arrested in the Midlands as part of a nationwide swoop against cyber crime.
A series of bizarre messages were posted online after the alleged cyber attack.
In all, 57 people were held in separate operations this week.
ITV News reporter Ben Chapman reports from Sutton Coldfield:
Britain's broadcasters and Downing Street are at a hostile standoff in a row over televised election debates between party leaders. ITV, the BBC, Channel 4 and Sky jointly said they would continue with plans to stage three debates, with or without David Cameron's presence.