INDIAN RIVER COUNTY, Fla. — No arrests have been made in the shooting death of a 17-year-old at a teen meetup near Garcia's Boat Ramp in Indian River County, with a self-defense claim expected in the case, Indian River County Sheriff Eric Flowers announced Monday.

WATCH BELOW: Sheriff Eric Flowers give update on shooting death of teen

Indian River County Sheriff's Office gives update on shooting death of teen

"We got kids out here losing their lives chasing likes and shares on social media," Flowers said.

The shooting occurred late Friday night when approximately 100 teens, ranging in age from 14 to 19, gathered at Garcia's Boat Ramp in the 3700 block of County Road 512, the sheriff said. Deputies had broken up a similar group earlier that evening before the crowd moved to the boat ramp.

"The 17-year-old, and a group of his friends, are approaching a truck, and there are two people, both 18 years old, inside of that truck. The 17-year-old opens the door, and he starts to punch," Flowers said. "He's going to punch on the people that are inside of that truck. One shot is fired. That shot is the shot that ultimately killed 17-year-old in this case."

The teen's friends drove him away from the scene, east on County Road 512, while calling 911 and a dispatcher told them to stop at Fellsmere City Hall, where emergency crews performed CPR, the sheriff said. He was taken to Sebastian River Medical Center and later flown to Holmes Regional Medical Center in Melbourne, where he died from his injuries.

The two individuals in the truck were identified using the sheriff's office's Flock technology, the sheriff said. Flowers said both have been cooperative with investigators, surrendering the weapon used in the shooting and the truck. Additional individuals involved in the incident have also been identified through Flock, though some remain unidentified. Investigators also recovered other weapons from the vehicle in which the 17-year-old was transported from the scene.

WATCH: 17-year-old dies after shooting near Garcia's Boat Ramp

17-year-old dies after shooting near Garcia's Boat Ramp in Indian River County

Flowers said a warrant will be submitted in the case, but it will be up to the state to determine whether charges are filed.

"There have been no arrests on this case at this time, because the preliminary investigation shows that the 17-year-old was opening the door to attempt to fight with the two that were inside of the vehicle. They had a history of fighting," Flowers said. "Self defense plays a part in these, and when these kids go out and videotape these fights, and now guns are involved, there's going to be more of this."

Names of those involved are not being released as the investigation continues, the sheriff said.

Investigators believe at least four fights occurred at the boat ramp on the night of the shooting. Multiple shell casings and rounds were recovered from the scene.

During Monday's news conference, Flowers released video of the shooting, noting the footage had already circulated widely on social media and that the victim's mother had seen it. One of the 18-year-olds involved in the shooting attends Vero Beach High School.

The sheriff said teen meetups like the one at Garcia's Boat Ramp are coordinated through Snapchat, making them difficult for law enforcement to track in advance.

"When it's Snapchat, it's basically a private conversation," Flowers said. "But it quickly can escalate to over 100, 150, 200 people there."

Flowers said the meetups, which have included alcohol, fighting, and firearms, have been taking place for years across Indian River County, Okeechobee, and surrounding areas, but that social media has intensified the danger.

"Now we're adding guns and alcohol into the mix, and we're adding social media into the mix, and so what we're seeing is an escalation of each one of these," Flowers said. "There's alcohol. There's guns, and those two just don't mix. And now add in the fuel of the fire of social media, and now we have a 17-year-old dead."

The sheriff said teens at these gatherings are motivated in part by a desire for online attention.

"The kids like to fight, and they like to videotape it, and they like to get their likes and shares because of that," Flowers said. Parents, you see these videos. You do not want your teens out at these meetups."

With Vero Beach High School's homecoming game scheduled for Friday and the dance on Saturday, Flowers said additional deputies will be on duty. Meanwhile, the sheriff urged parents to monitor their children's whereabouts and report any information about planned meetups to the sheriff's office.

"Parents, if your kids are telling you that they're headed out to one of these meetups, ask them where they're going. Ask, find out the details. Share that with us," Flowers said.

He recommended parents use location-sharing apps such as Life360 to track their children and said a child appearing to be in a remote or unusual location can be an indicator that a meetup is taking place.

The investigation remains active. Flowers said anyone who witnessed any of the events that night, including the shooting itself, and has not yet spoken to investigators is urged to come forward.

"I can tell you, our investigation is not even remotely over, and if we are able to identify people that were involved in this, from underage drinking to fighting, hurting other people," Flowers said. " If they did something wrong, they're going to have to be accountable for that."

Anyone with information is asked to call the Indian River County Sheriff's Office at 772-569-6700 or Treasure Coast Crime Stoppers at 1-800-273-TIPS.