In a horrific accident still unfolding, a high-speed Amtrak passenger train has derailed on a bridge over a major highway in DuPont, Washington. This was the maiden trip for the brand-new trail. All southbound lanes of Interstate 5 were closed south of Joint Base Lewis-McChord, and motorists were being warned to avoid the area.

“There have been multiple casualties as a result of the Amtrak derailment near Tacoma, Washington,” Pierce County spokesman Ed Troyer said of the 7:40 a.m. incident. “The casualties include multiple injuries and fatalities.”

A massive rescue is underway. Here’s the breaking video: