KABUL, Afghanistan - Bomb blasts have killed two NATO soldiers and wounded several others in Afghanistan, where insurgent violence is running at its highest level since the 2001 U.S.-led invasion.

NATO's International Security Assistance Force said in a statement that the soldiers were killed and wounded in two separate attacks today in restive southern Afghanistan.

The attack follows several days of bloody combat in the south of the country, where Canada has about 2,500 soldiers.

On Wednesday, a joint Afghan and coalition force on combat patrol in restive Sha Wali Kot district in southern Kandahar province came under attack from insurgent small-arms fire and rocket propelled grenades.

According to the statement, soldiers repelled the attack before calling in coalition aircraft which `destroyed the positively identified enemy firing positions with precision guided munitions.'

The coalition said `more than 40 insurgents' were killed, while Afghan and foreign forces suffered no losses.