The United States said on Friday it had successfully concluded recovery efforts off South Carolina to collect sensors and other debris from a suspected Chinese surveillance balloon shot down by a U.S. fighter jet on Feb. 4, and investigators are now analyzing its "guts."

The last of the debris from the Chinese balloon, which was downed by a Sidewinder missile, is heading to an FBI laboratory in Virginia for analysis, the U.S. military's Northern Command said in a statement.

Recovery efforts were halted on Thursday.