BOSTON (AP) — Authorities say three people who were taken into custody following a shooting in the country’s oldest public park have been questioned and released.

Police say no one has been charged in the Tuesday evening shooting on the Boston Common that left a man seriously injured.

Police say the 19-year-old man was shot near the bandstand, sending passers-by scattering for cover.

The shooting prompted nearby Emerson College officials to tweet out an alert saying that gunshots were reported and for students on campus to lock their doors. The college later lifted the shelter-in-place order.

Commissioner William Evans says he doesn’t believe the shooting was random. He says an argument broke out before the violence.

Boston Common is located across the street from the Massachusetts Statehouse.