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
ITV News' Tom Brady speaks to billionaire philanthropist Bill Gates about clean energy sources and a new $7bn green tech research fund.
A man accused of killing three people and wounding nine others in a shooting at an abortion clinic in Colorado has appeared in court.
Dean Lucas and Adam Coleman were in Mexico on a surf trip but it is feared they may have been victims of local violence.