Charging documents filed Tuesday accuse ThomasDinh Bowman of firing five shots, three of which struck 43-year-old Yancy Noll in the head. The two were stopped at a red light in North Seattle on Aug. 31.
Prosecutors said Bowman tried to conceal the crime by replacing the window and tires on his BMW. Staff at a tire shop where Bowman had his tires changed told investigators that Bowman and his wife insisted on taking the four old tires with them.
Documents also show police found a stash of guns in his home.
Bowman is being held at King County Jail without bail. His arraignment is set for Oct. 8.
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