Last Updated Mar 12, 2014 10:00 PM EDT
A Chinese government website early Thursday released satellite photos of what it calls three suspicious objects floating off the southern tip of Vietnam east of Malaysia. They are in the region where the plane disappeared Saturday with 239 people on board.
But there's a lot of debris in the ocean these days, and the Chinese are not saying they have found wreckage from the plane.
China's civil aviation chief stressed Thursday that there is no proof the objects are connected to the missing jetliner.
However, the location of this suspected debris is in an area fairly close to the intended flight path of the missing plane, which disappeared while en route from the Malaysian capital, Kuala Lumpur, to Beijing.
China's official news agency said the images captured March 9, the day after the Boeing 777 vanished, appear to show three fairly large floating objects. The largest one is estimated to be 79 feet long and 72 feet wide.
U.S. officials have been made aware of the satellite pictures. It's likely that the United States will go back through its own stored satellite images to see if U.S. satellites captured the same or similar images.
Meanwhile, it's up to search teams on the scene to determine whether these images are actually parts from the missing aircraft.
With every hour that goes by, any debris that is spotted is likely to be far from the plane's crash site, making the investigation even more difficult.
The search area has expanded to include 180,000 square miles on both sides of the Malay Peninsula.
It is still unclear which way the aircraft was heading when it vanished. Malaysia's air force chief said a radar signal was picked up over the Malacca Strait, hundreds of miles from the last contact with the missing jetliner. But it has not been confirmed that this was Flight 370.
"There is a possibility this aircraft made a turn back but we are not sure whether it is the same aircraft," air force head Rodzali Daud told reporters.
The Malaysian military has now asked American investigators for help in analyzing the radar blips.
One of the focal points of the search is the Strait of Malacca, one of the busiest shipping channels in the world.
The strait runs the entire way down the west side of Malaysia. It is on the opposite side of the country from where the search started out and 350 miles from where the plane lost contact with air traffic control, which gives a sense of how vast the search area has now become.
There was another development Wednesday that could lead investigators in a different direction.
A New Zealand oil right worker sent an email saying he'd seen a plane breaking up off the southeastern coast of Vietnam. The Vietnamese navy is now searching that area.
India sent ships to help the search today. In all, a dozen countries, including the United States, are combing the waters for clues.
Even Malaysian fishermen have been asked to help with the search.
On Wednesday, Malaysian government officials told passengers' relatives that the last words of the captain to air traffic control indicated nothing was wrong. But with no confirmed trace of the jet, the words did nothing to calm waiting friends and families.
With every day that goes by, Malaysian authorities are coming under increased pressure to show that the investigation is on the right track.