Old Lyme — State police said late Wednesday that they have seized one kilogram of fentanyl during a traffic stop on Interstate-95.

About 2:30 p.m. troopers out of Troop F in Westbrook, along with members of the Statewide Narcotics Task Force - East, stopped a 2009 Honda Accord near Exit 70 here. Police discovered that the vehicle, being driven by Gabri Darlin Javier-Delapaz of Providence, was possibly carrying illegal drugs, according to a news release. Javier-Delapaz and his passenger, Alcides Rafael Gomez-Alba, also of Providence, allowed troopers to search the vehicle, the release said.

The troopers and task force detectives, with assistance of narcotics-detection K-9 Hogan, searched the car. The dog alerted the troopers to the presence of drugs and, upon further search, troopers said they found a single brick determined to be fentanyl. It has an approximate street value of $1 million, according to the release.

Javier-Delapaz, 26, and Gomez-Alba, 28, were arrested and transported to the Troop F barracks. Each was charged with possession of narcotics and possession of more than 1 ounce of narcotics with intent to sell. They were each being held on a $500,000 bond and scheduled to appear Thursday in New London Superior Court.