Officers and security personnel immediately began providing medical attention to the surviving victims, who were taken to hospital in critical condition, he said. Police are still searching for the suspect, Koren said, noting that the shooting appears to be an isolated incident and there is likely no danger to the public. Investigators believe the four people knew each other, he said. Authorities preliminarily believe the suspect shot the three victims during a fight in the room, though the investigation is still ongoing, Koren said. “These kinds of incidents — any kind of extreme violence that happens in our city — we take very seriously,” Koren said. “We are confident that we will solve this case.” The police chief said officers were on the scene within a minute of receiving the 911 call, Koren said. CNN’s Elizabeth Wolfe contributed to this report.