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Undercover Investigation: Cresskill Opioid, LSD Dealer Arrested, Prosecutor Says

A 21-year-old Cresskill man has been arrested for selling LSD and opioid pills in Bergen County, authorities said.

Jeffrey S. Kishinevskiy

Jeffrey S. Kishinevskiy

Photo Credit: Bergen County Prosecutor's Office

Jeffrey S. Kishinevskiy was arrested Thursday, April 3 in Tenafly following a month-long undercover investigation, Bergen County Prosecutor Mark Musella said.

Detectives from the prosecutor’s Narcotic Task Force and the Paramus Police Department identified Kishinevskiy as a drug dealer after an investigation that began in March 2025, Musella said. Specifically, Kishinevskiy was suspected of selling LSD and opioids in Bergen County, Musella said.

Kishinevskiy was tracked down in Tenafly and arrested with help from the U.S. Postal Inspection Service and police in Tenafly and Cresskill, Musella said.

A court-authorized search was also carried out on Kishinevskiy’s car and home.

He was charged with:

  • First-degree distribution of LSD
  • Second-degree distribution of LSD
  • Second-degree distribution of LSD within 500 feet of a park
  • Third-degree distribution of suspected morphine pills

Kishinevskiy was held at the Bergen County Jail before being released following his first court appearance in Hackensack.

The investigation is ongoing. Anyone with information is asked to call the Bergen County Prosecutor’s Office Tips Line at (201) 226-5532.

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