A mass shooting at a Missouri nightclub left three people dead and one in critical condition early Sunday morning, police said.

Officers found multiple victims at the Klymax Lounge in Kansas City after they arrived on the scene at 1:26 a.m. local time (2:26 a.m. ET), the Kansas City Police Department said in a statement.

“Two victims were pronounced deceased at the scene,” the statement said. «One of those victims was located outside the salon and the second was located inside the business.»

He added that three of the victims were transported to the hospital, but a short time later one of them was pronounced dead.

All the victims are believed to be adults, according to the statement.

«Homicide detectives and crime scene personnel have responded to the scene,» it added. «They will process the scene to recover any evidence and will speak to potential witnesses.»

Police did not say whether anyone had been arrested in connection with the shooting or offer a motive.

The Klymax Lounge describes itself as a «dance club and nightclub» on its Facebook page which says it has a restaurant.

NBC News has reached out to Klymax Lounge for comment.