Utah Rockslide Flattens Home, Kills 2 Inside

Officials still don't know exactly what caused boulders to break free and slide into a neighborhood.
3:00 | 12/13/13

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Transcript for Utah Rockslide Flattens Home, Kills 2 Inside
Going to turn to the deadly rockslide in utah. Boulders breaking free and sliding into a neighborhood with no warning. Gio benitez has been tracking this overnight. Reporter: The boulders seemed to come out of nowhere. Just before dinner time. It's a mysterious disaster in southern utah. A sudden and massive rockslide, flattening a home, killing the two people inside. Felt like an earthquake. A lot of vibration. Reporter: Those big boulders, tearing the house apart. Look at the home before the rockslide. And look at it now, destroyed. First responders say the dust cloud created from the slide was so big, it stopped traffic on a local highway. It's a freak accident. You don't have time to escape. Reporter: Police officials still don't know exactly why this happened. But they say rockslides are common this time of year because of snow and freezing temperatures. Very emotional for the whole canyon. People show up, crumble into tears. Reporter: The rockslide causing immediate evacuations. Neighbors are finally able to go back home this morning. But right now, it is still too dangerous for rescue crews to even search that rubble. They'll have to wait until later this morning to go anywhere near it, george. That's is treacherous. Gio, thanks very much.

This transcript has been automatically generated and may not be 100% accurate.

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