Driver Killed, Three Injured in Violent Incident on Washington's I-5

Authorities investigate a stabbing and shooting that left one dead and three hospitalized in Federal Way.

The male driver was found dead from a stab wound inside a black BMW.
A front passenger sustained multiple gunshot wounds and is hospitalized.
Two other passengers, a man and a woman, were also hospitalized with stab wounds.
Law enforcement is interviewing witnesses and ensuring public safety.
The incident caused significant traffic delays on northbound I-5.