PORT CANAVERAL, Fla. -- Eyewitness News has learned a man is under arrest for allegedly sexually assaulting a 13-year-old girl on a Disney cruise ship. The suspect is behind bars in the Bahamas.

The Disney Wonder is getting ready to disembark on its next voyage to the Bahamas after it arrived back in Central Florida on Thursday morning. It arrived without a passenger from New York, a man who is now in jail awaiting arraignment on sex charges.

Cast members aboard the Disney Wonder prepared the ship for another voyage to the Bahamas after what turned out to be a troubling trip for one family. Investigators with the Bahamian police said, on New Year's Day, while the ship was in international waters, a 21-year-old passenger, Lucas George Wicker, sexually assaulted a 13-year-old girl.

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A spokesperson for the cruise line said the allegations were first reported to security personnel on the ship, who immediately notified the FBI. The spokesperson said the FBI gave them guidance on what to do while they were still at sea. When the ship arrived in Nassau on Tuesday, the Bahamian police took over the investigation.

Investigators said Wickers told the girl he wanted to show her "something" on a lower deck and, when she refused to go with him, he threatened to throw her overboard. Police wouldn't say where on the ship the alleged sexual assault occurred.

A spokesperson for the FBI said they were assisting the Bahamian police in their investigation.

Meanwhile, a spokesperson for the cruise line said the safety and security of the guests is their top priority and that they were working with law enforcement.

The victim is believed to be a Canadian citizen who lives in the United States with her parents.

Police said Wickers was being held in jail until his arraignment.