10. Police techniques.

Investigative records that disclose police techniques may be withheld if nondisclosure is necessary for effective law enforcement.  RCW 42.56.240(1).  The state Supreme Court has held that records of internal police investigations are public, but the names of complaining persons and law enforcement officers who are the subject of complaints may be withheld. Cowles Publ'g Co. v. Washington State Patrol, 109 Wn.2d 712, 748 P.2d 597 (1988) (finding, on the facts of the case, that nondisclosure is necessary for effective law enforcement).