4 US-led troops perish in Afghanistan

At least four US-led forces in Afghanistan have been killed in a roadside bomb attack in the eastern Afghan province of Wardak.

The four soldiers were killed by roadside bomb blasts in Saydabad district in the early hours of Sunday evening.

NATO officials confirmed the incident and the number of the casualties but did not elaborate on details of the incident.

The majority of foreign forces in Wardak province are Americans.

At least 206 foreign troops have so far been killed in the war-ravaged country this year.

Last year, nonetheless, remains the deadliest year for foreign military casualties with a total death toll of 711. The figure eclipsed the previous record of 521, set in 2009.

The climbing casualty figures among US-led forces have led to a growing opposition against the war in the countries contributing troops to the mission — particularly the US and Britain.

The security situation has steadily deteriorated across Afghanistan over the past few years despite the presence of around 150,000 US-led foreign troops in the country.