A just graduated high school student and his father were shot and killed Tuesday when a gunman opened fire in Monroe Park following Huguenot High School’s graduation ceremony at the Altria Theater in Richmond, Virginia, near Monroe Park and Oregon Hill.

The 19-year-old shooter was taken into custody. He had multiple firearms.

The motive for the shooting, which injured at least five other people, remains under investigation.

Open High school posted this message in response:

We are heartbroken for our RPS family and all of Richmond. Stay safe and keep your loved ones close.