Livingston County authorities say a Rochester man and woman were arrested on I-390 after a traffic stop found the driver had a suspended license.
A search turned up a bag of cocaine on the floor of the car. Both 22-year-old Luis Amaro and 41-year-old Janet Flores denied ownership of the drugs.
Both were arrested on drug charges and Amaro was charged with unlicensed operation. Deputies say Flores then tried to sneak more cocaine out of her underwear and hide it in the patrol car while being taken to booking. She was charged with evidence tampering and endangering the welfare of a child, since her 14-year-old son was also a passenger in the car when it was pulled over.