The stands, which use suggustive names like "Twin Peaks" and "Java Juggs," were subjects of undercover operations, according to police. Investigators found evidence of crimes ranging from lewd conduct to sexual activity.
Snohomish County Sheriff's Sgt. Darrell O'Neill was arrested in connection with the stands. Police believe O'Neill, a 30-year veteran, was tipping off the stands to police investigations.
Police said they learned about the stands during their investigation into O'Neill.
"That included video surveillance, that included in person undercover surveillance and interviews with witnesses," said Deputy Chief Dan Templeman.
O'Neill is being held on suspicion of conspiracy to promote prostitution and official misconduct, and police said more arrests might be coming. Some baristas who were interviewed could be charged with crimes later.