Muskogee Police said a 15-year-old boy is in the hospital after he was stabbed at Alice Robertson Junior High in Muskogee.

The superintendent said it happened inside a classroom around 11 a.m., causing a school lockdown.

The district said the Creek Nation Lighthorse Police has another 15-year-old student in custody.

Right now, the FBI and Lighthorse Police are investigating.

News On 6's Grant Stephens will have more on this story tonight at 9 and 10 p.m.