A man has been charged with two counts of first-degree murder for what prosecutors call the “horrific” deadly stabbing of his girlfriend and her roommate.

Late night on Sept. 8, law enforcement responded to a call for a man who was down and bloodied on the grass outside the Montrose apartments on S 152nd Street in Burien.

That man was identified as 29-year-old Marvin Ortiz Montecinos.

First responders treated Montecinos at the scene and took him to the hospital. He had multiple injuries on his neck, chest, and back.

Deputies followed a blood trail from the man outside to an apartment on the third floor.

The door to the apartment was wide open, so law enforcement went inside, calling out to anyone who might be inside.

They got no response.

Going through the home, they found that all

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