It is reported that a senior member of al-Qaeda - who was hit in a US airstrike on Syria earlier this week - has died.

A twitter account linked to the group has apparently confirmed the death of Mohsen al-Fadhli.

Washington officials were still investigating what had happened to him following the bombing on Tuesday.

In 2012, the Pentagon offered a 7-million dollar reward for information on Fadhli's whereabouts.

Meanwhile, The British Prime Minister David Cameron says an expansion of the UK's operation into Syria would be legal and appropriate.

Seaking to the BBC, Cameron said: Mr Cameron said:

"When you face a situation with psychopathic terrorist killers in Syria and Iraq, who have already brutally beheaded one of our own citizens, who have already launched and tried to execute plots in our own country to kill and maim innocent people, you have got a choice.

"We can either stand back from all of this... and say 'this is too difficult, it's too complicated, let's let someone else try to keep our country safe'... or we take the correct decision to say 'let's have a full, comprehensive strategy'."