An Upper Saddle River Police officer was arrested Monday after authorities discovered that he “brandished” his weapon while driving and interfered with a potential internal affairs investigation, officials said.

Kyle Zyskowski, 34, of Ramsey, was charged with six crimes including, witness tampering and cyber harassment after an investigation by the Bergen County Prosecutor’s Office and the Upper Saddle River Police Department, according to a release from the Bergen County Prosecutor’s Office.

The agencies began looking into Zyskowski after the prosecutor’s office received word on April 4 that the he “acted in a disorderly manner by brandishing his weapon while driving and acting erratically,” the release stated.

After checking into the incident, they found that not only was it true, but also found evidence that Zyskowski hindered a potential internal affairs investigation, authorities said.

Zyskowski did so by encouraging a witness to destroy evidence, revealing a resident’s domestic violence restraining order and “other privileged information” and that he conspired to harass and intimidate a witness, Acting Bergen County Prosecutor Dennis Calo said.

The prosecutor’s office did not provide any other specific details about the case and a spokeswoman could not be reached to elaborate. It was not clear if Zyskowski was on duty at the time of the alleged incident.

A Upper Saddle River Police spokesperson could not immediately be reached for comment Monday afternoon.

Zyskowski was served with a summons Monday and in addition to the witness tampering and cyber harassment offenses, he was also charged with hindering apprehension or prosecution, disclosure of domestic violence restraining order, harassment and disorderly conduct.

His first court appearance was scheduled for May 29 at 8:30 a.m.

Chris Sheldon may be reached at csheldon@njadvancemedia.com. Follow him on Twitter @chrisrsheldon Find NJ.com on Facebook.

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