TUCSON, AZ - Four teenage girls have been arrested for allegedly trying to smuggle heroin into southern Arizona on a commercial shuttle.
Tucson Sector Border Patrol agents working at the Interstate 19 checkpoint south of Amado took the girls into custody Monday.
Their names and hometowns haven't been released, but authorities say the four girls were between the ages of 15 and 17.
Agents at the checkpoint referred a commercial shuttle for inspection.
After a 15-year-old passenger behaved nervously during questioning, agents searched her bags and reported finding bundles of heroin.
They say the other girls had heroin tucked into their waistbands.
Authorities say the nearly eight pounds of heroin has an estimated street value of $90,000.
The teens were turned over to the Santa Cruz County Sheriff's Office.