A source tells ET that the bus, which was on its way to Ames, Iowa, slammed into another truck that was involved in the massive pile-up.

ET can confirm the 'DWTS' cast and crew is doing fine after their tour bus was involved in a major collision on Monday.

ET caught up with the 'Dancing With the Stars' season 25 champion and the second runner-up, who are joining the pros on tour.

Jordan and partner Lindsay Arnold took home the coveted 'Dancing With the Stars' Mirrorball trophy during the show's season 25 finale on Tuesday night.

Drew Scott was sent home Monday night after freestyle dances, leaving Frankie Muniz, Lindsey Stirling and Jordan Fisher as the remaining celebrity competitors for the finale.

ET spoke with the guest judge backstage after Monday night's 'Dancing With the Stars' -- find out if she revealed who she thinks will win!

Both Fisher and Arnold suffered injuries during the 'Dancing With the Stars' semifinals, yet still secured a place in the finale! The dancing duo opened up to ET about their ailments and preparing for the final week of competition.