Australian researchers released an audio recording Wednesday of an underwater sound that they say could possibly be related to the final moments of missing Malaysia Airlines Flight 370.
It's a long shot, but researchers at Curtin University near Perth, Australia, have been studying records from underwater listening devices, including those meant to monitor for signs of underwater nuclear explosions, in an effort to help find the missing plane.
"One signal has been detected on several receivers that could be related to the crash," said Alec Duncan with the university's Centre for Marine Science and Technology (CMST).
Researchers have been analyzing the very low frequency sound for weeks to see if it was "the impact of the aircraft on the water or the implosion of parts of the aircraft as it sank," Duncan said. "But (the source of the noise) is just as likely to be a natural event."
MORE on CNN.com
A private company declared that it has found what it believes is wreckage of a plane in the ocean, but leaders of the search for the missing Malaysia Airlines Flight 370 are dismissing the claim.
The reasons for the skepticism are obvious - the site where GeoResonance says it found the wreckage, in the Bay of Bengal, is several thousand miles away from the current search area in the southern Indian Ocean.
The Joint Agency Coordination Centre, which is coordinating the multinational search, dismissed the claim.
"The Australian-led search is relying on information from satellite and other data to determine the missing aircraft's location," the JACC said.
"The location specified by the GeoResonance report is not within the search arc derived from this data. The joint international team is satisfied that the final resting place of the missing aircraft is in the southerly portion of the search arc."
Malaysian acting Transportation Minister Hishammuddin Hussein said Malaysia "is working with its international partners to assess the credibility of this information."
GeoResonance said it analyzes super-weak electromagnetic fields captured by airborne multispectral images.
"The company is not declaring this is MH370, however it should be investigated," GeoResonance said in a statement.
The company's director, David Pope, said he did not want to go public with the information at first, but his information was disregarded.
"We're a large group of scientists, and we were being ignored, and we thought we had a moral obligation to get our findings to the authorities," he told CNN's "New Day" on Tuesday.
GeoResonance's technology was created to search for nuclear, biological and chemical weaponry under the ocean or beneath the earth in bunkers, Pope said.
The company began its search four days after the plane went missing and sent officials initial findings on March 31, Pope said. It followed up with a full report on April 15.
By going public, the company says it hopes it will spur officials to take its claim seriously.
Malaysian authorities contacted GeoResonance on Tuesday and were "very interested, very excited" about the findings, Pope said.