Breaking News: Nightclub shooting in Cincinnati

Overnight Breaking News:

One person was killed and 14 others injured when gunfire broke out at a nightclub in Cincinnati early Sunday morning, police said.

The shooting happened at Cameo Night Club just after 1 a.m. ET, CNN affiliate WLWT reported. Several people are undergoing surgery, Cincinnati Police Sgt. Eric Franz told CNN. Police do not have any suspects in custody but are interviewing witnesses.

The shooting could not help but bring back memories of the Pulse nightclub shooting in Orlando less than a year ago.

Franz initially said "multiple shooters" were involved. Cincinnati Assistant Police Chief Paul Neudigate later said there was "only one reported shooter."

While the motive is unclear, there's no reason to suspect terrorism at this point, he said. Cameo Night Club hires police officers for extra security. Two officers were stationed at the club's entrance and another two in the parking lot, Franz said.

Assistant Police Chief Paul Neudigate told the affiliate that several victims have life-threatening injuries.

"We are in the middle of a very horrific situation that occurred at the nightclub with multiple victims," Neudigate said. "It's going to be a long night for our homicide units to investigate."

Neudigate described it as a "chaotic crime scene," and said they are looking for witnesses, many of whom took off when the shooting started.

"Many of the witnesses fled, but everyone that we can identify is being interviewed," he said.

Some of the injured drove themselves to area hospitals, police said.

Police Captain Kimberly Williams said the gunmen were still at large and the force did not have good descriptions of them. Witnesses had been reluctant to co-operate, she added.

"At this point, it's unclear exactly what instigated the shooting," Capt Williams told reporters. "We believe that there were at least a couple of shooters involved."

The shooting happened at about 1 AM while hundreds of people were in the venue. There was "chaos" in the aftermath, Captain Williams said.

The Cameo Night Club had had problems in the past, "but this is by far the worst," she added.

This is a developing story that will be updated.

Note: CNN contributed to this report.