Seven hostages taken by Nigerian militants are thought to be dead.
The group Ansaru claimed responsibility for the killings as a response to reports of British warplanes in the area. The seven included one Briton, a Greek, an Italian and four Lebanese hostages.
The UK's Foreign Secretary William Hague condemned the 'cold-blooded' murders saying:
"Responsibility for this tragic outcome rests squarely with the terrorists. I am grateful to the Nigerian Government for their unstinting help and co-operation.
"We are utterly determined to work with them to hold the perpetrators of this heinous act to account, and to combat the terrorism which so blights the lives of people in Northern Nigeria and in the wider region."
See the Independent for full report.