This picture taken from aboard a flying Soviet-made AN-26 used as a search aircraft by Vietnamese Air Force to look for missing Malaysia Airlines flight MH370, shows a crew member taking part in the search operations over the southern seas off Vietnam on March 9, 2014. Malaysia on March 9 launched a terror probe into the disappearance of a Malaysian Airlines passenger jet carrying 239 people the day before, investigating suspect passengers who boarded with stolen passports, as relatives begged for news of their loved ones. The United States sent the FBI to investigate after Malaysia Airlines flight MH370 vanished from radar early on March 8 somewhere at sea between Malaysia and Vietnam, but stressed there was no evidence of terrorism yet.    AFP PHOTO / HOANG DINH NAMHOANG DINH NAM/AFP/Getty Images
Questions swirl after airliner vanishes
01:57 - Source: CNN

Story highlights

NEW: Malaysia Airlines says financial assistance has been given to families

Interpol tweets it's "examining additional suspect #passports"

Vietnamese navy finds new debris; Thai navy expands search area

Radar data suggest the missing plane may have turned back, officials say

Kuala Lumpur, Malaysia CNN  — 

The mysteries surrounding the disappearance of Malaysia Airlines Flight 370, and the true identities of some of its passengers, are as deep as the southeast Asian waters where multinational search teams are searching for the jet.

Navies from two of Malaysia’s neighbors were pursuing new leads as Sunday turned into Monday in the region.

Vietnam’s navy has spotted a floating object about 80 kilometers (50 miles) southwest of Vietnam’s Tho Chu Island, which is off the country’s southwest coast in the Gulf of Thailand, Vietnam National Search and Rescue Committee spokesman Hung Nguyen told CNN. The object was spotted by a Vietnamese navy rescue aircraft at about 7:30 a.m. ET Sunday (6:30 p.m. local time). Because of the dark, the navy aircraft could not get close enough to identify the floating object and was recalled to base. Three search and rescue boats have since been deployed to that location.

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