A car bomb targeting a NATO convoy killed four Afghan civilians and one NATO soldier in Afghan capital on Monday, NATO and Afghan officials said. The explosion happened on the Kabul-Jalalabad road at 10:15 a.m. and wounded four NATO troops, said Maj. Toby Jackman. Maj. Luke Knittig, another NATO spokesman, said one of the wounded troops later died of his injuries. He said one of the other wounded was in serious condition. Two sustained light injuries. NATO did not give the soldiers' nationalities. Meanwhile, suspected Taliban militants attacked a district headquarters in a southern Afghan town early Monday, sparking fighting that left 16 militants and three police dead, an official was quoted as saying by the Associated Press.