Police have not identified the suspect, who will face charges related to the shooting spree.
The video shows a large crowd of people holding up traffic before a fight breaks out between two men.
"If you're watching this, stay away from Fourth Avenue North and Ocean Boulevard", Hinson says while filming.
Myrtle Beach Police Department Lt. Joey Crosby told reporters that bystanders and participants, including the armed security guard, were being treated for injuries sustained in the gun fight, none of them life threatening.More news: Burt Ward Remembers 'Batman' Co-Star Adam West: 'I Will Forever Miss Him'
More news: Trump blasts obstruction of justice probe reports as 'phony'
More news: Theresa May 'distraught' over fatal London tower blaze
Police officers found the stolen vehicle and have detained a person of interest, says Lt. Crosby. His identity is reportedly being withheld until he is medically cleared and arrest warrants have been served. The footage was still online at the time of publication.
"They were out dancing in the street that's when I started my Facebook live", said Hinson. "Then, they started fighting". The alleged shooter then shot numerous rounds and escaped the scene by carjacking a vehicle, police confirm. No officers were injured.
"I'm fine", Reyes said, "but my family, they're on edge, and they're anxious now". "A representative for Facebook did not immediately respond to CBS News' request for comment", the rpeort added.