It's a rare development in an otherwise fruitless investigation.

By Nash Jenkins / Time
April 20, 2016
Credit: Getty Images

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Investigators say they are now nearly certain that two pieces of wreckage discovered off the coast of Mozambique months ago belonged to Malaysia Airlines Flight 370 — the Boeing 777 airliner that disappeared from the skies in March 2014.

A report released by Australian authorities on Tuesday said that the flotsam — a piece of a tail and a piece of a wing that were found some weeks apart — “almost certainly” came from the plane, citing specific numerical markings on the debris that connected it to Boeing and Malaysia Airlines, UPI reports.

The development is a rare flicker of progress in an investigation that has otherwise yielded no results. All 239 people who were aboard the aircraft when it disappeared en route to Beijing are presumed to be dead.