A mother, father and child were killed when a tree fell on their car during heavy rain and flooding in Tennessee, an official said Wednesday.

The three were killed when saturated ground caused a large tree to fall in the Chattanooga suburb of East Ridge just after midnight, Hamilton County Office of Emergency Management spokesperson Amy Maxwell said.

A search was also ongoing Wednesday for a man who walked through a flooded road in Chattanooga on Tuesday night but hadn't been seen since, Maxwell said.

The full extent of the damage isn't yet known. County officials planned to tour the damage Wednesday morning, Maxwell said.

Rainfall totals by Wednesday had piled up to more than half a foot in some parts of the Chattanooga metropolitan area, CBS affiliate WDEF reported, adding that fla

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