Lots of new developments. But start with a story developing overnight. The fisz pictures from a mass and I have lethal mudslide in Washington state. What it looked like before and then after a huge... See More
Lots of new developments. But start with a story developing overnight. The fisz pictures from a mass and I have lethal mudslide in Washington state. What it looked like before and then after a huge chunk of a hill came loose and rumbled down directly into homes, with cries for help coming from the debris, rescue crews are cram scrambling to save lives. Reporter: The area is totally inaxeb inaccessible up the road. Some people may be trapped. A mountain of mud that is still unstable. From above you get a center of how enormous this slide is. It was just before 11:00 A.M. When the wall of mud and trees a quarter mile wide raced down a hillside in this rural community and straight across state route 30 where he was driving. I was the third car behind a truck with a boat. That's when I just saw the darkness washing everything out of the road. Reporter: An estimated 30 houses were caught in the slide and smashed by the force or pushed along like play things. We have people that are yelling for our help and we are going to make -- we're going to take extreme risks to try to get them out of there. Reporter: Three people killed and at least eight hurt. Mud in some places was reported to be 12 feet deep. I can't get hold of my grandma, and we don't know if they're okay. And people are stuck. You cannot go to your property. Reporter: Adding to the disaster, it's backed up the river that runs through here, raising fears of flash flooding if the water bursts through before officials can release it. He is just thankful he made it out. The darkness. I just saw the darkness. That's all I could see. Everything from one side, completely in the other side. Reporter: The key right now is two-fold, to rescue anyone who might still be up there at first light, and to clear some of the debris in the river before it floods this entire area. Bianna. We know among those critically injured is an infant. Wish them the best. Thanks, Neil.
This transcript has been automatically generated and may not be 100% accurate.