LIVERMORE (KRON) — A Livermore police officer has resigned Thursday after having a sexual relationship with a woman at the center of the Oakland police sex scandal, Celeste Guap.

The officer was placed on administrative leave while Livermore police investigated the case. Livermore police said that the officer had been under investigation in connection with the scandal since June 14.

The Livermore Police Department says it has ended its investigation and the officer involved has sent in his resignation letter.

The police statement did not name the officer involved or specify the alleged misconduct.

“This incident does not accurately reflect the professionalism of the men and women of the Livermore Police Department who protect our community every day,” police chief Michael Harris said in a press release. “Now that this matter has reached a conclusion, we will move forward and continue to serve with honor and protect with purpose. I would like to thank our community for their continued support and patience as we completed this investigation.”

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This comes the day after the city of Oakland ended its investigation of the 12 Oakland police officers who were also involved with Guap.

Four officers were fired from the Oakland police force, and seven others are on administrative leave. Those officers were not publicly named and none so far are facing criminal charges.

The city’s administrative investigation found that those officers had engaged in a litany of misconduct, including attempted sexual assault, engaging in lewd conduct in public, assisting in the crime of prostitution,

assisting in the evading arrest for the crime of prostitution, accessing law enforcement databases for personal gain, being untruthful to investigators and failing to report a violation of law or rules.

The city of Oakland began investigating the sex scandal allegations on Sept. 23, 2015.

The Alameda County District Attorney’s Office has an ongoing investigation into whether any criminal charges are warranted. Officers at several other Bay Area law enforcement agencies have also been implicated in the case, including in the district attorney’s office, where former Oakland police Capt. Ricardo Orozco was fired for contact with the woman.

Guap, meanwhile, was flown to a Florida rehabilitation facility in August and was arrested for allegedly assaulting a guard on Aug. 29. She remains in jail under $300,000 bail.

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