An 8-year-old boy was reportedly found unconscious in a swimming pool aboard the Royal Caribbean Anthem of the Sea cruise ship Thursday night and is in critical condition.

According to CBS New York, the boy was found in the swimming pool on the ship at around 8 p.m. Officials told the station that the child had gone at least 18 minutes without oxygen.

The New York Post reported early Friday the boy was in critical condition.

The ship was about 10 miles offshore from Queens, New York when the child was discovered.

Royal Caribbean said in a statement that its medical team onboard the ship had treated the boy, but required additional attention. The ship also altered its course and returned to the port in Bayonne, New Jersey.

 CBS New York reported the FDNY, NYPD and the Coast Guard responded to the ship and medical equipment was loaded onto the deck of the ship.

Officials said the child was transported to a Staten Island hospital.

Law enforcement sources told WABC-TV, the boy is from the Netherlands and is part of a group of 49 people. The station reported two buses met the vacationers in Bayonne to take them to a hotel.

Click for more from CBS New York.

Click for more from WABC-TV.