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.
‘‘We still don’t know what the motive may have been,’’ said police spokesman Detective Alvaro Zabaleta.
Eight other children, including the victim’s 7-year-old sister, were on the bus but were not harmed. Authorities took the children and the bus driver to a police station to be interviewed.
The victim, who has not been identified, attended charter middle school Palm Glades Preparatory Academy.
Concerned parents gathered at the shooting site, which was cordoned off by crime scene tape as authorities combed the bus for evidence.