MIAMI — A 13-year-old girl was shot to death in front of her sister and several other students while riding the bus to a charter school Tuesday, Miami-Dade police said.

A male student was in custody but authorities did not release his name or age and said they are still interviewing him. A gun was also recovered at the scene in Homestead, south of Miami, but authorities did not say where or how many times the victim was shot.