15 civilians were killed on Friday in two separate bomb attacks in eastern and southeastern Afghanistan.

15 civilians were killed on Friday in two separate bomb attacks in eastern and southeastern Afghanistan.

A Taliban suicide car bomb targeted a NATO convoy in eastern Afghanistan Friday, killing at least three civilians.

"In the morning today a foreign forces convoy came under a suicide attack near the airport in Jalalabad city," provincial police spokesman Hazrat Hussain Mashriqiwal told AFP.

He added that three civilians were killed and four others were wounded in the powerful explosion in Jalalabad, which is home to an important US military base.

Separately, 12 civilians onboard a minivan were killed when a roadside bomb struck their vehicle in the militant-infested southeastern province of Ghazni.

The civilian fatalities come as Taliban insurgents step up attacks on government and foreign targets after Washington announced a delay in US troop withdrawals from Afghanistan last month.