A US soldier and a foreign contractor were killed alongside two Afghan soldiers died in the latest suspected insider 'green on blue' attack in Afghanistan. The nationality of the contractor has not been confirmed.
The deaths occurred in the Wardak province, according to the International Security Assistance Force. Provincial government spokesman Shahidullah Shahid said:
Initial reports indicate that a misunderstanding happened between Afghan army soldiers and American soldiers.
More top news
Police wanted to question Norman Williams over the suspected murders of his sister-in-law Sheila Jefferson and her husband Dennis Jefferson.
A 93-year-old Second World War veteran has flown over 10,000 miles to be reunited with his wartime sweetheart more than 70 years on.
The Republican presidential candidate is known for making some "interesting" comments - but can you guess who made these?