Latest update, 11:45 p.m.: The rocket has reentered Earths atmosphere, according to U.S. Space Command, which has been providing updates via Space-Track.
The Space Command said it believes the rocket splashed down in the Indian Ocean, but was waiting for official confirmation from 18 Space Control Squadron.
The official China Aerospace Science and Technology Corporation, meanwhile, said on Weibo it had reentered the Earths atmosphere at 10:24 p.m. ET and provided coordinates: around 72.47° east longitude and 2.65° north latitude. Those coordinates would put it in the northern Indian Ocean, near the Maldives.
Update, 8:24 p.m.: The reentry window has shifted to between 9:11 and 11:11 p.m. ET. Saturday, with the projected landing now in the Mediterranean Basin.
Computer projections show that if the debris were to reenter the atmosphere at exactly 10:04 p.m. ET on Saturday, it likely would be over the northern Atlantic Ocean, though the location varies minute to minute.
The section is part of a rocket called Chinese Long March 5B, which launched a module of the countrys first permanent space station into orbit last week.