The discovery of the metal sparked speculation that it might be from Malaysia Airlines Flight 370, which disappeared almost two years ago.
Mitsubishi Heavy Industries said the metal piece is "highly likely" to be part of a Japanese H-IIA or H-IIB rocket that was launched from southern Japan, based on an initial examination of photos and videos of the object.
Company spokeswoman Sayo Suwashita said officials are trying to determine which rocket and its launch date. Rocket debris falls into the ocean after every launch, and most is collected but sometimes pieces can be found some distance from the launch site, including in foreign waters, she said.
Japan has launched H-IIA and H-IIB rockets since the 2000s. The most recent H-IIA launch was in November 2015.
Flight 370 took off from Malaysia in March 2014. It lost communications and made a sharp turn away from its Beijing destination before disappearing. It is presumed to have crashed in the southern Indian Ocean, far away from Thailand.
The debris was found on the eastern coast of southern Thailand's Nakhon Si Thammarat province, about 370 miles (600 kilometers) south of Bangkok on the Gulf of Thailand.
Australia has led a multinational search that has so far cost more than USD 120 million.
Aviation experts from Malaysia visited Nakhon Si Thammarat on Monday to inspect the metal piece, after which the Thai air force flew it to Bangkok for further examination.
The Australian Transport Safety Bureau announced Monday that the search of 120 square kilometers (46,000 square miles) of seabed where the Boeing 777 is thought to have crashed had been set back after a ship lost its sonar equipment.
The ship lost the sonar unit plus 4.5 kilometers (14,800 feet) of cable. The ship is now making a six-day journey to the Australian port of Fremantle to collect new cable and will continue the search with spare sonar equipment, it said.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
