The federal high court in Abuja has granted a request by the Department of State Services (DSS) to remand Nnamdi Kanu, leader of the Indigenous People of Biafra (IPOB), till July 26.
The court granted the order on Tuesday morning when Kanu was re-arraigned on charges bothering on alleged treason.
Binta Nyako, the presiding judge, said he is to be remanded in DSS custody pending the determination of his trial.
Kanu appeared in court without his lawyer or any member of his defense team.
The Biafra agitator had jumped bail and was recently rearrested by Interpol who extradited him to Nigeria on Sunday.