NEW : Chopper reportedly went down near 1,000-foot TV tower . The chopper was flying over the city of Los Angeles when it lost contact with ground controllers and crashed into a hill in Griffith Park at about 1:45 p.m. local time on Wednesday, according to KTLA-TV. Fourth victim in critical condition at Texas hospital , military says . ` I saw a red-glowing fireball shoot hundreds of feet up into the air , '' he told the paper . ` Three killed when MH-53 Sea Dragon crashed in field near Corpus Christi .
NEW : Chopper reportedly went down near 1,000-foot TV tower . The chopper was flying over the city of Los Angeles when it lost contact with ground controllers and crashed into a hill in Griffith Park at about 1:45 p.m. local time on Wednesday, according to KTLA-TV. Fourth victim in critical condition at Texas hospital , military says . Three killed when MH-53 Sea Dragon crashed in field near Corpus Christi .