WALLA WALLA -- An investigation involving the Walla Walla County Sheriff's Office remains open.
Frank Harrill, FBI supervising senior agent in Spokane, said Thursday there is no new information from his agency to release on the probe, which is now at the 21/2-year mark.
The investigation began in October 2009 when then-Sheriff Mike Humphreys requested the Washington State Patrol look into possible financial improprieties in the sheriff's office.
Officials have said the probe has focused on an individual, but requests for details have been denied on the grounds the matter is still under investigation.
Along with the WSP and the state Auditor's Office, the FBI became involved last year. Since the FBI's involvement, the WSP and Auditor's Office have deferred comment to that agency.