'Underwear' bomber changes plea to guilty

A Nigerian man accused of trying to blow up an American plane on Christmas Day 2009 has told a judge he wants to plead guilty.

It is alleged Umar Farouk Abdulmutallab had a bomb in his underwear.

The aircraft had nearly 300 people on board and was heading for Detroit.

Al-Qaida's Yemen-based arm claimed responsibility for the plot.