KABUL, Afghanistan (AP) — Afghan officials say a mine laid in a road has killed eight civilians in the country's south, including women and children.

The governor's office in Helmand province says the eight were driving Monday in Musa Qala district when their car hit the explosives.

The United Nations says 579 civilians were killed in the first four months of this year. Militants are responsible for most of these casualties. In the first four months of this year, anti-government forces caused 79 percent of all civilian casualties and Afghan and foreign forces 9 percent. It was not clear who was responsible for the remaining 12 percent.