At least one of the shootings was caught on the camera of a visitor, who streamed it live on Facebook.
His video showed the fight breaking out after which the suspect was seen pulling out his gun and firing multiple shots, as people screamed and fled the scene.
One of the men took out a gun and shot the person he was fighting and continued to shoot multiple rounds. The shooter then hijacked a vehicle and fled - but not before firing additional gunshots at people in the crowd, Crosby said.
Crosby said no police officer was shot, but a patrol vehicle was hit by gunfire, WBTW-TV reports.
"Y'all...for real, I'm never vacationing with my family at Myrtle Beach again", declared Sabrina Nero on Facebook.
Hinson didn't realize that a shooting has already happened.
"I thought they were dancing. However, when they are shared for sadistic pleasure or to celebrate or glorify violence, we remove them", the spokesperson said. "Then, they started shooting", he said later.
The third shooting occurred Sunday morning just after midnight, at 12:25 a.m. on 5th Avenue North and Ocean Boulevard.
Myrtle Beach Police continue to investigate, and News 19 will keep you updated as more information arrives. The gunman reportedly was eventually shot by an armed security officer. A shot grazed a security officer in the leg, and he was treated on scene.
As of this writing, Hinson's Facebook Live video (watch below), which now has 3.9 million views, is still available for viewing.