Two people have been arrested and charged with aggravated drug trafficking after Maine State Police allegedly found crack cocaine in their vehicle during a traffic stop on Interstate 295 late Friday night. Gregory Martin of The Bronx, New York, and Augusta, and Holly York of Rockland were driving north on I-295 in South Portland around midnight when police stopped their car, according to a report issued Saturday morning from Steve McCausland, spokesman for the Maine Department of Public Safety. After the initial roadside investigation, officers had a state police drug sniffing dog do a search of the vehicle.