Oklahoma tornado survivor: 'We thought we were dead'

At least 24 people are confirmed dead, including seven children, and many are missing after a tornado tore through Oklahoma City, US officials say.

Worst hit was Moore, south of the city, where neighbourhoods were flattened and schools destroyed by winds of up to 200mph (320km/h).

Ricky Stover, who lives near Oklahoma City, locked his cellar door as the huge tornado tore apart his home.