Metallic Debris Found on Thai Beach Likely Japanese Rocket, Not MH370

Thai army soldier inspects a piece of suspected plane wreckage which has been found off the coast of southern Thailand in Nakhon Si Thammarat province, Jan. 24, 2016.

People stand next to a piece of suspected plane wreckage which has been found off the coast of southern Thailand in Nakhon Si Thammarat province, Jan. 24, 2016.

Details of a piece of suspected plane wreckage which has been found off the coast of southern Thailand is seen in Nakhon Si Thammarat province, Jan. 24, 2016.

People stand next to a piece of suspected plane wreckage which has been found off the coast of southern Thailand in Nakhon Si Thammarat province, Jan. 24, 2016.

Details of a piece of suspected plane wreckage which has been found off the coast of southern Thailand is seen in Nakhon Si Thammarat province, Jan. 24, 2016.

People stand next to a piece of suspected plane wreckage which has been found off the coast of southern Thailand in Nakhon Si Thammarat province, Jan. 24, 2016.

Details of a piece of suspected plane wreckage which has been found off the coast of southern Thailand is seen in Nakhon Si Thammarat province, Jan. 24, 2016.

A large piece of curved metal with barnacles attached washed ashore in Nakhon Si Thammarat province, Tanyapat Patthikongpan, Jan. 24, 2016.

People stand next to a piece of suspected plane wreckage which has been found off the coast of southern Thailand in Nakhon Si Thammarat province, Jan. 24, 2016.

Curved metallic debris found on a Thai beach is almost certainly from a Japanese rocket, not from the missing Malaysia Airlines Flight 370, which has become one of aviation history's biggest mysteries.