A six-year-old boy drowned on a Carnival cruise on Sunday while vacationing with his family, according to Carnival Cruise Lines and reported by an NBC News affiliate in South Florida.

Qwentyn Hunter was on a four-day trip aboard the Carnival Victory, Carnival said in a statement. He was in the pool are with members of his family, the statement continued.

"Carnival extends its heartfelt sympathy to the family during this very difficult time," the statement said. "The company's CareTeam is providing assistance and support."

The ship arrived in Miami on Monday, and according to the Miami-Dade Police, Hunter was in the pool with his 10-year-old brother when the incident occurred at about 4:45 p.m. He was pulled out and given CPR by was pronounced dead, according to police.

"I was sitting at the pool and we heard the DJ say, 'get the, there's a child in the pool' and then a guy jumped in and picked him up and then they were doing chest compressions and stuff on him," Debi Ciavarella, a passenger told NBC. "It was all so devastating."

The incident has been ruled an accident by police.

Jeff Callendar, the president of the Ariza Talent and Modeling Agency, said that Hunter had been signed with his company for about six months.

"He was an upcoming actor/model," Callendar said, describing Hunter as sweet and full of life. "I am still in shock."

Carnival Cruise Lines said they don't have lifeguards on duty at their pools.

"We do not have lifeguards on duty at our pools," Joyce Oliva, a spokeswoman for Carnival, said in an email statement to NBC. "As with many land-based hotels and resorts with swimming pools, cruise ships provide conspicuous signage to alert passengers that a lifeguard is not on duty."

Parental supervision is required for any children under 13 years of age.

"In this case, there was a parent present at the time of the incident," Oliva continued. The shipboard medical team was summoned via an emergency call and arrived on the scene promptly."

The ship has one doctor and three nurses.

"To the best of our knowledge it is the first time a child has drowned aboard one of our ships," Oliva said. However, an adult male drowned on the same ship approximately a month ago.