“Western Australia Police have attended a report of material washed ashore 10 kilometres (six miles) east of Augusta and have secured the material,” Australia’s Joint Agency Coordination Centre said in a statement.
The Australian Transport Safety Bureau (ATSB) is examining photographs of the material to determine whether it has any links to the search for the missing jet, it added.
The bureau has provided photographs of the material to the Malaysian investigation team.
“It’s sufficiently interesting for us to take a look at the photographs,” ATSB Chief Commissioner Martin Dolan told broadcaster CNN, describing the object as appearing to be sheet metal with rivets.
But he added a note of caution. “The more we look at it, the less excited we get.”
The Boeing 777 with 239 people aboard was flying from Kuala Lumpur to Beijing on March 8 when it mysteriously diverted.
It is thought to have crashed into the remote Indian Ocean off Western Australia, where a huge search is underway.