A former Guam police officer—once considered a decorated veteran of law enforcement—will soon learn his fate in federal court on Thursday.

John “Boom” Mantanona is scheduled to be sentenced at the District Court of Guam for jury tampering.

Mantanona pleaded guilty in 2020 to a charge of obstructing justice, after admitting to trying to influence a juror during a 2018 drug trial involving two of his clients while working as a private investigator.

Nearly five years later, the case is nearing a conclusion. Prosecutors are recommending a sentence of 70 months in prison.

But Mantanona’s attorney, Jay Arriola Jr., argues for leniency—citing Mantanona’s cooperation with federal investigators and his law enforcement career.

Arriola is asking the court to impose no prison time, and instead consider supervised release, pointing out that others involved received much lighter sentences.

Judge John Coughenour is expected to hand down the sentence Thursday morning at 9 a.m.