Nine people were injured in a mass shooting early Sunday at the Riverfront Live music venue in Cincinnati’s East End, authorities confirmed, as police launched an investigation into the gunfire that erupted during a birthday celebration.

The shooting happened just after 1 a.m. at the venue, violent crime and public safety in community spaces. Additional official updates and police briefings are expected as the investigation continues.

Witnesses described a prior altercation before shots rang out, and family members questioned venue security.

Authorities are expected to provide additional updates as the investigation continues.