One student is dead and another is in custody after a shooting early Wednesday outside a school in Pittsburgh. The ages of the students involved in the incident outside the Oliver Citywide Academy were not immediately clear; however according to the city school district’s website, Oliver Citywide Academy is a full-time special education center serving grades 3-12.

The Pittsburgh Post-Gazette said the shooting happened around 7:25 a.m. on the steps outside the school. It wasn’t immediately clear what spurred the shooting, and no other injuries were reported. The names of the students have not been released, but police said both were under the age of 18. Authorities said the wounded student was taken to a hospital where he was pronounced dead a short time later.

Pittsburgh Major Crimes Cmdr. Richard Ford said during a news conference at the school that “We believe, based on the information that we have and the video we’ve been able to see, that we have the actor in custody and there’s no potential threat to the other schools,”  adding that the victim was killed as he was walking into the school. Maria Montano, a city spokeswoman, said most students were still on their way to the school when the shooting happened, and buses were rerouted to another school building. Students who were already in the school were kept in the building. Classes there were canceled for the day following the shooting.

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