The son of Bergen County Executive Kathleen Donovan entered a not guilty plea Friday to drug charges stemming from an incident where he allegedly smoked marijuana with two teenage girls at the county executive’s home.

Brendan Donovan, 20, waived a court appearance set for Tuesday and his Hackensack-based attorney, Robert Galantucci, entered the plea on his client’s behalf. according to a report on northjersey.com.

Donovan was charged last week with possession of marijuana, possession of drug paraphernalia and being under the influence of marijuana.

The arrest came after police got a call from Rutherford High School informing them that a female student had left school and appeared to be under the influence of drugs, authorities said. Police said they later received another call saying that the student returned to school with another female student and appeared to be under the influence.

The two girls were taken to Hackensack University Medical Center, according to authorities.

Police said they learned the two girls, 16 and 17, had smoked marijuana with Donovan at his Rutherford residence, where he lives with his mother. He was arrested after officers went to check if he needed medical attention.

The girls took Xanax in addition to smoking marijuana, police said. Donovan was not charged in the alleged Xanax use.

Donovan is scheduled to appear in Rutherford municipal court May 22.