An aid worker in Ecuador waskilled in a spearattack allegedly carried out by a clan of the Huaorani indigenous people, the interior minister said Friday, according to dpa.The Huaorani, who live in the Amazon rainforest and survive byhunting, killed one aid worker and injured another after being toldthat one of their children was dead. The clan had brought the child for medical attention to the state aidorganization Ecuador Estrategico in the eastern province of Pastaza,El Telegrafo newspaper said. They became violent when a doctorinformed them that the child was dead.Four other aid workers who fled into the forest were stillunaccounted for.