Shark attacks four swimmers at Texas’ South Padre Island

(NewsNation) — Four people were attacked by a shark during Fourth of July celebrations Thursday at South Padre Island.

Two people were taken to the hospital with bites, at least one of them severe, authorities said.

Police were called for the attack on the man who was severely bitten around 11 a.m., according to Nikki Soto, the South Padre Island city secretary. He was initially treated at the beach by firefighters and police.

The Texas Parks & Wildlife Department said later in a statement that two people were bitten and two more “encountered” the shark but were not seriously hurt. One of the bite victims was taken to a hospital in Brownsville, and the other was “flown out for further treatment.”

Based on witness reports and images on social media, Game Warden Capt. Chris Dowdy said, authorities believe a single shark about 6 feet (about 1.8 meters) long was responsible.

Beach patrol, firefighters and police were patrolling the shore and flying drones after the attacks, Soto said. The last reported shark attack in the area was five years ago, according to Dowdy.

The Coast Guard remains on high alert Friday and has advised all beachgoers to avoid the water after multiple sharks were spotted by aerial technology.