China’s space agency says a core segment of its biggest rocket has reentered Earth’s atmosphere in the Indian Ocean above the Maldives.

It said most of the debris burned up early Sunday.

Harvard astrophysicist Jonathan McDowell tracked the tumbling rocket part.

He tweeted that “An ocean reentry was always statistically the most likely. It appears China won its gamble. But it was still reckless.”

China’s official Xinhua News Agency said reentry occurred Sunday at 10:24 a.m. Beijing time.

People in Jordan, Oman and Saudi Arabia posted footage on social media of the debris piercing the early dawn skies over the Middle East.