AUBURN, Wash. — A third person believed to be involved in the killing of 19-year-old McKinley Williams in February was arrested April 3.
The 17-year-old is expected to be charged with first-degree murder and robbery. A 15-year-old and Zaire Orr, 18, previously received the same charges.
Orr pleaded not guilty April 2 and remains in King County Jail on $3 million bail…