Amtrak Train 501 derailed in Seattle onto the I-5 Freeway this morning on the first day of the new route. First responders have announced they are treating the accident as a mass casualty.

Authorities have announced “

BREAKING: "Multiple injuries and fatalities" reported after "massive" Amtrak derailment near Tacoma, Washington – officials

— CNBC (@CNBC) December 18, 2017

“>multiple injuries and casualties” from the accident.

Not much information is available right now, but people have posted videos and images on Twitter.