The 13-year-old Miami-area girl killed in a Tuesday morning school bus shooting was riding with her 7-year-old sister, police told reporters at a televised news conference.
Police said another student on the bus, a boy, was the shooter and that investigators found his gun and arrested him, but few other details were immediately available; police hadn't questioned him yet.
The shooting happened around 6:45 a.m., police said, as the private bus was at 137th Avenue and Southwest 296th Street in Homestead, Fla., south of Miami.
Eight other students were riding the bus and were uninjured, police told reporters, and all their families have been contacted. Police said all the students on board had been taken to the Miami-Dade Police Department for questioning about the shooting.