Four children are dead and six of their relatives in hospital after someone tried to wash away a pesticide sprayed under their Texas home, unleashing a poisonous gas.
Amarillo fire officials said phosphine gas was likely emitted when water was mixed with the pest control chemical used to kill mice.
Siblings Felipe Balderas, seven; Johnnie Balderas, nine; Josue Balderas, 11 and Yasmeen Balderas, 17, all died, WJLA reported.
One child died at the scene and three others died at a hospital. The childrens' six relatives are "not out of the woods yet," fire officials said.