Mon. 12:30 p.m.: Motorists injured by train derailment

This photo provided by Danae Orlob shows an Amtrak train that derailed south of Seattle on Monday, Dec. 18, 2017. Authorities reported "injuries and casualties." The train derailed about 40 miles (64 kilometers) south of Seattle before 8 a.m., spilling at least one train car on to busy Interstate 5. (Danae Orlob via AP)

SEATTLE, Wash. (AP) – Authorities say several vehicles on Interstate 5 in the Seattle area were struck by falling train cars when an Amtrak train derailed south of Seattle this morning, and “multiple motorists” were injured on the roadway.

No fatalities of motorists were reported.

All southbound lanes of I-5 were closed south of Joint Base Lewis-McChord, and motorists were being warned to avoid the area.

The Pierce County Sheriff’s office says “injuries and casualties” were reported when the train derailed before 8 a.m. Pacific Time today. Authorities did not immediately have more information.

The Pierce County Sheriff’s office said in a tweet that the train was heading south bound.