Two suspected pot dealers were arrested after police said the pair tailgated an unmarked police car.

Jonathan Gonzalez, 23, of Leominster, and Felicia Deneen, 19, of Framingham, were arrested Wednesday at 10:10 p.m. after police stopped them on River Street, Lt. Paul Shastany said.

Two officers riding in an unmarked car on Union Avenue noticed a car tailgating them. They pulled into a driveway to let the car pass, and then stopped the car on River Street, Shastany said.

The officers asked the driver, Deneen, for her license and registration, when they made a discovery.

"She opened up the glove box, and in plain view were several individually wrapped baggies of marijuana," Shastany said. "There were five individual baggies that were packed for sale, in the officers' opinions."

The officers ordered Deneen and her passenger, Gonzalez, out of the car.

When Gonzalez got out, he reached into his pocket, removed something and dropped it on the ground. The officers said it was cocaine, Shastany aid.

"Gonzalez said, 'The weed is mine, but I didn't drop the coke,"' Shastany said. "They (the officers) said they saw him drop it, but he still denied it."

Deneen told officers the marijuana and the cocaine were both hers, police said.

Police also found a single hydrocodone pill, which is a prescription pain reliever, while searching the car.

Deneen, of 18 Arbetter Drive, and Gonzalez, of 394 Merriam Ave., were charged with possession of marijuana with intent to distribute and possession of cocaine.

Deneen was also charged with possession of hydrocodone and cited for following too closely.

Gonzalez has an open assault and battery case in Middlesex Superior Court stemming from a carjacking incident last September in Framingham. He was indicted on charges related to that case three weeks ago.

Both Gonzalez and Deneen pleaded not guilty at their Framingham District Court arraignments yesterday.

Gonzalez was ordered held on $1,000 bail, while Deneen was released without bail. Both are due back in court on June 26 for a pretrial conference.