CARMEL, Ind. (WISH) — Four teenagers were taken into custody early Wednesday morning after a traffic stop in Carmel led to the discovery of marijuana and several firearms, including a handgun modified into a fully automatic machine gun, the Hamilton County Sheriff’s Office said in a social media post.

The stop happened shortly after midnight Tuesday in the 9900 block of Keystone Parkway southbound. That’s just north of the Carmel-Indianapolis border.

A sheriff’s deputy initiated the stop after seeing a vehicle committing a traffic violation. Five teenagers were inside the vehicle, four of whom were juveniles. The investigation led to the arrest of four occupants, incl...