A four-year-old child died after drowning in a swimming pool on a Norwegian Cruise Line ship off the coast of North Carolina.

Two children started drowning in the pool on the Norwegian Breakaway. Crew members were able to revive a six-year-old boy who was also in the adult pool. He was flown to a nearby hospital. The four-year-old could not be saved.

According to Coast Guard Petty Officer Adam SanSoucie, the unidentified six-year-old was taken to Carteret General Hospital in Morehead City, N.C. with his grandmother and a nurse by a Marine rescue helicopter. His condition is unknown. It is not clear if the children are related.

The cruise line posted a message regarding the incident to its Facebook page saying, "We are extremely saddened to report that a tragedy occurred on board Norwegian Breakaway this morning. Our emergency medical team was called and notified that two small children were unresponsive on the pool deck. The team responded immediately and quickly administered CPR to both children. The older child was then airlifted by the U.S. Coast Guard to the closest medical facility, accompanied by his grandmother and a nurse from the ship. Devastatingly, the younger child passed away on board.

We extend our deepest sympathies to the family during this extremely difficult time and are providing full assistance and support.

The family is in our thoughts and prayers and we ask that you please keep them in your thoughts and prayers as well."

 The Norwegian Breakaway was on the second day of a weeklong cruise from New York to Florida and the Bahamas.