(CNN) -- The U.S. Coast Guard said it was searching early Wednesday for a woman who was reported missing from a cruise ship as it sailed from Cabo San Lucas, Mexico, to San Diego.
The Celebrity Millennium arrived in San Diego on Tuesday after an overnight cruise from the Mexican resort city, according to Petty Officer Levi Read. The 65-year-old was reported to the Coast Guard as missing early Tuesday afternoon.
A cutter began a search around early Wednesday for the woman. A daytime search by two Coast Guard aircraft yielded "negative" results, Read said. The FBI has joined an investigation into her disappearance.
Calls to Celebrity Cruises were not immediately returned.