A powerful tornado swept through an Oklahoma City suburb tearing down blocks of homes, two schools and leaving at least 91 people dead, including 20 children, local officials said. The state medical examiner's office released the latest death toll but the number was climbing rapidly, as emergency crews combed through smashed homes and the collapsed remains of an elementary school in Moore, Oklahoma. Stunned weather forecasters reported a two-mile (three-kilometer) wide swath of vicious winds, and television news helicopters tracked a dark funnel plowing through densely-packed suburbs. Above, a child is passed along a human chain of people after being pulled from the rubble of the Plaza Towers Elementary School in Moore, Okla. We've had a massive tornado, a huge one that has passed through this community, Oklahoma's Governor Mary Fallin told a news conference. We know there are a lot of injuries. We know we've lost a tremendous amount of structures throughout this community and throughout the state, she said, as the Moore police chief urged people to leave the area.