German authorities said he would remain there pending extradition proceedings to France.
The two men remained free on $20,000 bail each, pending another hearing next month.
He remained at a federal prison hospital in Missouri pending the entry of his plea.
The prosecutors said the defendants would remain in jail, pending a new trial.
All four defendants in the 1986 trial were convicted and received prison sentences but remain free pending the outcome of their appeals.
Mr. Frakes remained in custody last night pending an arraignment.
All were sentenced to 25 years' imprisonment but remained free pending the outcome of the appeal that was decided today.
Ford said Mr. Bennett remained on leave, pending the completion of its investigation.
We are content, for now, to allow them to remain aboard the Enterprise, pending a full investigation of their activities.
Poindexter remained at liberty after sentence, however, pending an appeal against his conviction.