Drone footage reveals the devastating aftermath in London, Kentucky, where a deadly tornado left a trail of destruction, downed power lines, and shattered homes as part of a violent storm system that swept through the central US.

Tornadoes and sever storms hit several parts of the US on Friday, leaving at least 23 dead and thousands of buildings damaged.

Authorities say nine people are dead after a tornado touched down and sparked a “mass casualty event" in southeastern Kentucky.