One person has been killed and at least 14 others wounded after a shooting at a nightclub in Cincinnati, according to reports.
The shooting took place just after 1am at Cameo Night Club in Linwood and involved "at least a couple of shooters", according to Cincinnati Police Captain Kim Williams.
Assistant police chief Paul Neudigate said several of the victims have life-threatening injuries.
He told WLWT TV: "We are in the middle of a very horrific situation that occurred at the nightclub with multiple victims.
"It's going to be a long night."
He added that hundreds of people were inside the nightclub at the time of the shooting, describing it as a "chaotic crime scene".
Authorities told the TV station that the nightclub has had several incidents in the past, but Cpt Williams said "this is the worst by far".
Sergeant Eric Franz told ABC News: "We have 14 people that have been injured from gunfire, one of which is deceased.
"We've got a really large scene at multiple hospitals."
No-one has been arrested over the shooting.
Police have said there is no indication the deadly shooting at a Cincinnati nightclub is terrorism related.
Wounded victims have been taken to four hospitals across the city.