The Palm Beach Sheriff's Office has said that the deceased was driving an allegedly stolen car from Broward County, and died in Boynton Beach after the gun accidentally went off.
Police said the teen had a school ID from Coral Gables Sr. High.
While the shot teen was transported to the hospital, police interviewed the other two teens.
The teen who suffered the bullet wound later died at the hospital. Meanwhile, the stories from the other teens of being victims of an attempted robbery did not match. Police soon determined the trio had traveled from Miami-Dade County to Palm Beach in order to commit their own robberies.
A Palm Beach Sheriff's Office spokesperson said, "One of them was sitting in the back seat behind the driver and ... fooling around, the gun went off and protruded through the back seat into the driver, killing the driver."