A reasonable explanation.
However, transportation should never take more than a few days, more likely, hours.
The article never said how long he was not in custody of the BoP. Guess they will have to wait until he shows back up or there is an oopsy and a grudgingly given apology at a press conference of “something bad happened and it not really our fault”
When they arrested one of the J6 protesters in West Texas and took him for transport to DC it took 3 - 4 weeks, blowing through all the required preliminary hearing deadlines. The judge in DC excoriated the DOJ but still had him held when any other defendant would have been freed.
ALEXANDA AMON KOTEY
Register Number: 11685-509
Age: 39
Race: Black
Sex: Male
NOT IN BOP CUSTODY
Release Date: UNKNOWN
My guess is that he has been sent to a friendly foreign government for interrogation.