KUALA LUMPUR, Malaysia (AP) — While possible clues about the fate of a Malaysia Airlines jet missing for more than two weeks keep coming from satellite images, it has been as frustrating as ever to turn the hints from space into actual sightings.

China on Saturday released a satellite image showing an object floating in a remote stretch of the southern Indian Ocean near where planes and ships have been crisscrossing since similar images from an Australian satellite emerged earlier in the week. China’s image, showing an object that appeared to be 72 feet by 43 feet, was taken around noon Tuesday.

Australian officials said the location was within the 14,000-square-mile area they searched on Saturday, but the object was not found. Australian Maritime Safety Authority spokeswoman Andrea Hayward-Maher said she did not know whether the precise coordinates of the location had been searched, but added that coordinators will use the information to refine the search area.

The authority, which is overseeing the search in the region, said a civil aircraft reported seeing a number of small objects in the search area, including a wooden pallet, but a New Zealand military plane diverted to the location found only clumps of seaweed. The agency said in a statement that searchers would keep trying to determine whether the objects are related to the lost plane.

Despite the frustrating lack of answers, Australian Prime Minister Tony Abbott on Sunday suggested the sightings were a positive development.

“Obviously we have now had a number of very credible leads and there is increasing hope — no more than hope, no more than hope — that we might be on the road to discovering what did happen to this ill-fated aircraft,” Abbott told reporters in Papua New Guinea.

The latest satellite image is another clue in the baffling search for Malaysia Airlines Flight 370, which dropped off air traffic control screens March 8 over the Gulf of Thailand with 239 people on board.

After about a week of confusion, Malaysian authorities said pings sent by the Boeing 777-200 for several hours after it disappeared indicated that the plane ended up in one of two huge arcs: a northern corridor stretching from Malaysia to Central Asia, or a southern corridor that stretches toward Antarctica.

The discovery of two objects by the Australian satellite led several countries to send planes and ships to a stretch of the Indian Ocean about 1,550 miles southwest of Australia. But three days of searching have produced no confirmed signs of the plane.

One of the objects spotted in the earlier satellite imagery was described as almost 80 feet in length and the other was 15 feet.

The Boeing 777-200 is about 209 feet long with a wingspan of 199 feet and a fuselage about 20 feet in diameter, according to Boeing’s website.

Aircraft involved in the search include two ultra-long-range commercial jets and four P3 Orions, the maritime safety authority said.