A new report shows Seattle police spent more than a year digging into its phone records looking for the source of leaks to the news media.
The department said the leaks involved information that could have compromised several cases, including the murder of a Seattle police officer.
Investigators examined records from 120,000 calls and uncovered at least two contacts with media that triggered an internal inquiry.
The findings were examined by the department's Office of Professional Accountability, which found the evidence inconclusive.
The Seattle Times said police wouldn't say how much time and money was spent looking into the leaks.