The military command of Van Ninh district in Khanh Hoa province are examining the debris found by a local fisherman in Dai Lanh Commune, and initially thought that it came from an aircraft, Xinhua news agency reported citing Tuoi Tre Thanh pho Ho Chi Minh daily as saying.
The 41-year-old fisherman Le Tan Binh said he found the aluminium debris with 3.1 metres in length, and nearly 100 km in weight on February 11 off Khanh Hoa's coast.
However, he did not report the findings to local authorities.
On Wednesday, a group of photographers came to Dai Lanh to take photos, heard about the debris and reported to local press.
No further details about the findings were provided.