Witness photo of Good Samaritan helping shark attack victim before emergency crews arrived. pic.twitter.com/hRr2sqjxmf — WWAY NewsChannel 3 (@WWAY) June 14, 2015

BRUNSWICK COUNTY, N.C. — Two teenagers were attacked by a shark on the same North Carolina beach on Sunday, resulting in both losing an arm.

A 12-year-old girl lost part of her arm and could lose her left leg in an attack on a beach in Oak Island at about 4:15 p.m.

Authorities said a 16-year-old boy was also attacked about 45 minutes later. He also lost an arm.

Both were airlifted to New Hanover Regional Medical Center in Wilmington. Oak Island officials said both victims are in fair condition.

A hospital spokesperson told CNN that they’ve each had an arm amputated; his below the shoulder, hers at the elbow. The female also reportedly sustained serious tissue damage to her leg.

A witness told WWAY that the boy’s arm was “clean off.” He said the shark that attacked the boy looked about seven or eight feet long. It remains unknown whether or not it’s the same shark.

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Other witnesses described the incident as “nightmarish” and compared it to a scene from “Jaws,” according to The Associated Press.

Both attacks happened at high tide in the vicinity of Ocean Crest Pier, a popular destination among beach goers. It's also a popular fishing spot and any possible bait in the water may have attracted sharks.

Oak Island sent an ATV along the entire beach to clear everyone out of the water. The sheriff also sent a helicopter.

Although the beach was cleared, Oak Island officials said the beaches will be open on Monday. Authorities urge the public to be cautious. Extra personnel will be on the scene.

The identities of the victims have not been released. The girl is not from Oak Island and was visiting relatives, according to reports.

On Thursday, another girl, 13, was bitten while boogie boarding off Ocean Isle Beach. That makes three shark attacks in Brunswick County in three days.

In Thursday's incident, the victim suffered non-life-threatening injuries, but the shark took bites of her boogie board.

The Brunswick County Sheriff’s Office said the Town of Oak Island will release more details about Sunday’s shark attacks on Monday morning.

This is the scene right now in Oak Island at the 58th access after two reported shark bites. (Heather Eccard Grube) pic.twitter.com/sUV6Feg6wg — WECT News (@wectnews) June 15, 2015

Asking for prayers. My 16 year old cousin was attacked by a shark today at Oak Island and lost his arm and is in critical condition. — ★gennahutzler★ (@gennahutzler) June 14, 2015

More pictures into our newsroom from Oak Island after two reported shark bite incidents. (Source: Tyler Barnes) pic.twitter.com/dv7XXL7S04 — WECT News (@wectnews) June 14, 2015

These look to be two separate instances; teenage girl at Oak Crest Motel; teenage boy near 55th St. #OKIShark — Patrick Ellis (@PatrickEllisWx) June 14, 2015

16 year old boy has lost an arm to the shark bite; he is being airlifted to NHRMC now. #OKIShark — Patrick Ellis (@PatrickEllisWx) June 14, 2015

Helicopter patrolling the beach in Oak Island following reports of two shark bites. Source: Audrey Sudderth pic.twitter.com/EjYz7HJ6Pd — WECT News (@wectnews) June 14, 2015

The mayor of Oak Island posted the statements below to Facebook following the first shark attack. She said shark attacks at Oak Island are so rare, she can't remember any happening before Sunday.

CNN contributed to this report.