Marvin Ortiz Montecinos, 29, was arrested and charged with two counts of murder in the first degree Monday after a double homicide investigation in Burien, the King County Sheriff’s Office (KCSO) announced.

Last Monday, two victims were found dead in a Burien apartment building , with another individual critically injured in the parking lot.

“According to police investigators, this is an individual who stabbed and murdered his girlfriend as well as her roommate,” Douglas Wagoner, a spokesperson for the King County Prosecuting Attorney’s Office, told KIRO Newsradio.

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