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

Officers found multiple victims of the Klymax Lounge in Kansas City after they arrived at 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 lounge and the second was located inside the business.”