Two people are under arrest, and nearly 11,000 bags of heroin were seized after a traffic stop in Tarrytown.

Officials for the Greenburgh Drug and Alcohol Task Force say they pulled over Carolyn Claudio, of Yonkers, and Julio Vargas, of New York City, after an unsafe lane change on Tuesday.

When the two appeared to be overly nervous, a search found nine bags of heroin in their possession. Further investigation of the vehicle revealed more bags filled with the drug, which had a street value of $250,000.

The pair is now being held in the county jail without bail.