EUGENE, Ore. (AP) — Police in Oregon said six people were shot during a concert Friday night at an event hall in Eugene.

Police Chief Chris Skinner said at least one person was in critical condition.

Officers responded to reports of a shooting at the WOW Hall in Eugene around 9:30 p.m. Friday. The gunfire erupted in a parking lot behind the venue.

Police said the suspected shooter ran away from the scene and no arrests had been made. Investigators haven’t determined whether the shooting was targeted or random.

The police chief described “chaos” at the scene when officers arrived.

He also said investigators hadn’t received much information from possible witnesses. Police set up a tip line and are asking for witnesses to come forward with any information about the shooting.