Brendan Vaughan, the British man thought to have been killed in Nigeria by an Islamic extremist group, was "likely to have been murdered in cold blood", the Foreign Secretary said.
William Hague added that the UK had "worked closely" with Nigeria over the last few weeks, and expressed his thanks to the Nigerian authorities.
More top news
A court has ruled that the original coffin in which Lee Harvey Oswald was buried belongs to his brother, not the undertaker's that sold it.
Manic Street Preachers lyricist went missing nearly 20 years ago but mystery still surrounds exactly what happened to him.
Deputy Prime Minister admitted he wanted to hit David Cameron on more than 20 occasions on late-night chat show 'The Last Leg'.