Nia Wilson

The BART Police Department released images of the suspect who approached 2 sisters and slit their throats with a knife Sunday night.

The incidents happened at the BART MacArthur Station in Oakland, California at 9:36 p.m. Sunday.

Police say 18-year-old Nia Wilson was pronounced dead at the scene. Her sister, Lahtifa Wilson, 26, was transported to a nearby hospital, where she is in stable condition with a neck wound.

John Lee Cowell

According to BART PD, both suspect and victims boarded the train at the Concord Station and departed the train at the MacArthur Station.

Surveillance footage shows a white male, identified as 27-year-old John Lee Cowell, approach and stab the sisters on the train platform.

Cowell is described as a stocky, Caucasian, 5′ 8″, 190 pounds with short, dark hair as well as a closely cropped beard and mustache. He should be considered extremely dangerous and anyone who sees him should immediately call 9-1-1.