Moving the motion, Mr Awomolo told the court that the identities of the witnesses needed to be protected for security reasons.
The judge, who said that the case had taken three adjournments due to no representation, consequently struck out the case.
The IPOB leader equally apologised to his team of lawyers earlier, led by Aloy Ejimakor, for attacking them before Ms Nyako.
Justice Binta Nyako earlier noted that she could not proceed with a trial where a defendant lacked confidence in the court.
Mr Ejimakor said Mr Kanu’s legal team received the “momentous and somewhat pyrrhic” letters when they visited him on Friday.
The Federal High Court, Abuja Division, adjourned the trial of Nnamdi Kanu, leader of IPOB, indefinitely on Monday.
A presidential spokesman said President Bola Tinubu has not been briefed about the development.
Mr Ejimako stated, “It appears that the DSS has cancelled all future visitations to #MNK.’’
“I hereby recuse myself from this case and remit the file to the chief judge for further necessary action,” Ms Nyako stated.
“We feel his pains and the pain of his family,’’ said Mr Asadu.
