The underwater search for the missing jetliner, which vanished in 2014, was called off in January after almost three years of searching, Xinhua news agency reported.
The Australian Transport Safety Bureau (ATSB) and other agencies, however, continued to conduct drift modelling and satellite analysis.
ATSB chief Greg Hood on Wednesday released a statement and two reports from Geosciences Australia and the Commonwealth Scientific and Industrial Research Organisation (CSIRO) which point to a narrower search area for the missing jet.
Hood said Geosciences Australia had analysed satellite imagery from the region in which the jet may have disappeared and found several man-made objects at the bottom of the ocean.
He said that while the latest report was encouraging, the object had "not been definitely identified" from MH370.
"They (reports) provide analysis and findings relating to satellite imagery taken on March 23, 2014, two weeks after the disappearance of MH370, over the southern Indian Ocean.
"Geoscience Australia identified a number of objects in the satellite imagery which have been classified as probably man-made.
"The image resolution is not high enough to be certain whether the objects originated from MH370 or are other objects that might be found floating in oceans around the world."
Meanwhile the CSIRO's reverse drift modelling has narrowed down any potential new search area to be just 5,000 sq km, down from 25,000 sq km last year.
Hood said that while it was not up to Australia to decide whether a new underwater search should be commissioned, this data "may be useful" in informing any further search effort "that may be mounted in the future".
MH370 was a scheduled passenger flight bound for Beijing from Kuala Lumpur. There were 239 passengers and crew on board when it disappeared on March 8, 2014.
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