During the hearing, a NAB prosecutor stated before the court that the NAB is conducting inquiries against Khuhro, he might not fly back home after travelling abroad.
Ministry says it has evidence which suggests that the former service man remained in contact with Indian spy agency Research and Analysis Wing (RAW).
The former ISI Chief has moved that high court to seek the removal of his name for the ECL stating that he wants to go abroad.
Suspects Omar Saeed Sheikh and others were detained by authorities under Section 11 EEEE (preventive detention for inquiry) of the Anti-Terrorism Act.
In a separate case, the Sindh government and Daniel Pearl's family have appealed against the Sindh court's April decision in the country's Supreme Court.
The court ordered to place the names of the accused on the no-fly list