SEATTLE - Police have launched an investigation after finding two people - a man and woman - on the streets of Seattle with critical stab wounds early Sunday morning.

Detectives believe the stabbings are related.

A 911 call came in about 4:20 a.m. reporting that a woman was bleeding from stab wounds in the doorway of an apartment at 110 Eighth Ave., near Yesler Way.

On their way to the scene, police found a man, also bleeding, near the intersection of Broadway and Yesler, about a block away. He also was suffering from stab wounds.

Both the man and woman were taken to Harborview Medical Center in Seattle with life-threatening injuries.

At this point, investigators say they believe this may be a case of domestic violence. Homicide detectives are investigating.