Minister Liow Tiong Lai said French authorities and plane maker Boeing were among those who have confirmed that the so-called flaperon came off a 777 jet. It has been taken to France for further analysis, which is due to begin on Wednesday.
He also said Malaysia is reaching out to territories near Reunion Island, which is east of Madagascar, to help determine whether any other objects that may was ashore in the region could be part of the missing plane.
A new piece of debris, meanwhile, found on Sunday on the Reunion Island turned out to be a "domestic ladder,'' and doesn't belong to a plane, Malaysian Director General of Civil Aviation Azharuddin Abdul Rahman told The Associated Press amid media reports that a new plane part was found.
Malaysia Airlines Flight 370 disappeared in March 2014 with 239 people on board. It is the only missing 777 jet.
Some information for this report came from AP.
