Troops killed by roadside bomb in Eastern Afghanistan

The NATO-led International Security Assistance Force is reporting that four foreign troops have been killed by a roadside bomb in eastern Afghanistan.



Most of the troops serving in the country's east, near the border with Pakistan, are reportedly, Americans.



At least 220 foreign troops have died in Afghanistan so far this year.



Earlier, International Security Assistance Force said two NATO troops had been killed in the south on Friday.