Pacific

MH370 Investigators cast doubt on catastrophic fire evidence

Accident investigators have cast doubt on the possibility that blackened debris found on Madagascar is evidence of a catastrophic fire aboard the missing Malaysian airliner.

Wreckage hunter Blaine Gibson hand-delivered five pieces of debris last week to officials at the Australian Transport Safety Bureau who are searching for Malaysia Airlines Flight 370.

The bureau said in a statement Thursday that investigators had yet to determine whether the pieces were from the Boeing 777 that is thought to have plunged into the Indian Ocean southwest of Australia in 2014.

But a preliminary examination found that two fiberglass-honeycomb pieces were not burnt, but had been discolored by a reaction in resin that had not been caused by exposure to fire or heat.