Ten soldiers with the NATO-led International Security Assistance Force (ISAF) were killed Wednesday in separate incidents, a grim trend that could make June among the deadliest months since Taliban regime collapsed in late 2001, the alliance confirmed in press releases issued?in Kabul?Thursday.

In the latest incident, according to press releases, four foreign soldiers were killed in a traffic accident in southern Afghanistan, the stronghold of Taliban militants.

"Four ISAF service members died as a result of a vehicle accident in southern Afghanistan yesterday," the press release said Thursday.

Four other ill-fated troopers were killed in the lethal homemade device -- Improvised Explosive Device (IED) attacks in eastern and western parts of the militancy-plagued country.

Majority of over 290 NATO soldiers, who lost their lives since the beginning of this year, have been killed by IED attacks in the post-Taliban Afghanistan.

Another ISAF soldier lost his life in a small-arms attack in the south of the country and the 10th was killed following an accident while on patrol in western Afghanistan also on Wednesday.

However, the press releases did not disclose the nationalities of the victims saying "It is ISAF policy to deter identification procedures for casualties to the relevant national authorities."

The heavy casualties on Wednesday coincided with the resignation of Gen. Stanley McChrystal, commander of U.S. and NATO forces in Afghanistan, who was replaced by Gen. David Petraeus, the commander of U.S. Central Command.