KABUL (AFP) - Two soldiers in the NATO-led force in southern Afghanistan died in attacks while troops killed four militants in a raid on a bomb cell, the military said Tuesday. The latest killings in a grinding insurgency came as the top US military commander and special envoy to the region were in neighbouring Pakistan for talks on efforts to quash militants. An International Security Assistance Force soldier was killed and three wounded in a bomb strike in southern Afghanistan, ISAF said in a statement. Another ISAF soldier was killed by indirect fire Monday, the force said earlier, with the Dutch defence ministry confirming the death overnight. The ministry said that a 20-year-old soldier was killed and five others were wounded in a rocket attack on their base in the southern province of Uruzgan. On Monday, Afghan and US-led troops killed four militants and arrested two in a raid on a compound where the Taliban had gathered in the southern province of Kandahar, a US statement said. The operation was in the Taliban heartland of Maiwand, about 70 km west of Kandahar, and targeted a bomb-making cell, it said.