LOS ANGELES (CBS) — Authorities were searching Saturday for a cruise worker who disappeared on a Disney cruise ship heading to Mexico from Los Angeles.

Rebecca Corium, 24, was reported missing Tuesday when she did not show up for her shift on the Disney Wonder as it traveled from Los Angeles to Puerto Vallarta, ABC7 reported.

READ MORE: Man In His Mid 30s Fatally Shot In Carson

Corium was last seen early Tuesday. Her family said her roommate told them Corium had called a friend, but Disney representatives were not releasing information regarding the call.

“They say they know what the conversation was but they’re not telling us,” Corium’s aunt, Trish Davies, told ABC7.

“They say they’ve got to wait for the investigation.”

The ship, which is scheduled to return to the Port of Los Angeles in San Pedro Sunday, is registered in the Bahamas, so authorities there are handling the investigation, according to ABC7.

Disney representatives told the woman’s family she was missing.

READ MORE: 2 Riverside Co. Sheriff's Deputies Recovering After Being Hit By Delivery Van; 2 Pedestrians Killed

“We didn’t know if Rebecca had fallen overboard or what, just that the ship had been thoroughly searched,” Coriam’s mother, Ann Coriam, told ABC7.

“We’d asked whether the police were onboard and we were told `no’ at that stage.”

Authorities said all parties were cooperating with the ongoing investigation.

“It seems that the ship’s just gone on with its holiday,” Davies said.

“The crew have carried on working as normal like nothing’s happened.”

MORE NEWS: Due To Wind Concerns, Disneyland Vaccine Site To Be Closed Sunday

(©2011 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. Wire services contributed to this report.)