(CNN) - The closest thing to a clue in the search for a missing commercial jetliner is traces of oil found in the ocean in the same area where contact was lost with the Malaysia Airlines flight.
A Vietnamese search plane spotted the oil while flying over the search area. The oil slicks are between 6 and 9 miles long and are suspected to be from the missing plane, the Vietnam government's official news agency reported. The traces of oil were found about 90 miles south of Tho Chu Island, the report said.
In the meantime, the search area is being expanded and efforts to locate the plane will continue overnight, said Azharuddin Abdul Rahman, director general of civil aviation in Malaysia.
Nobody knows what happened to Malaysia Airlines Flight MH370, other than air traffic controllers lost track of it not long after it left Kuala Lumpur, the capital of Malaysia, on its way to Beijing.
The families and loved ones of the 239 passengers and crew aboard expected the worst as they awaited any significant development.
The area of focus has been in the South China Sea, where the Malaysian airspace and Vietnamese airspace meet.
"We have no idea where this aircraft is right now," Malaysia Airlines Vice President of Operations Control Fuad Sharuji said on CNN's "AC360."
Bits and pieces of information have begun to form, but it remains unclear how they fit into the bigger picture, if at all.
For instance, after the airline released a manifest, Austria denied that one of its citizens was onboard the flight as the list stated. The Austrian citizen was safe and sound, and his passport had been stolen two years ago, Austrian Foreign Ministry spokesman Martin Weiss told CNN.
Similarly, Italy's foreign ministry confirmed that no Italians were onboard MH370, even though an Italian was listed on the manifest. - CNN