Mr. Kasuri warned that the trial of Mr. Musharraf would open a "Pandora's box, " which would ensnare other senior military leaders who supported his actions.
Pakistani Foreign Minister Khursheed Kasuri said travel would be granted by an "entry permit system" - rather than a passport - once the identities of travellers are verified.
Kasuri said Sunday that foreign intelligence had years ago passed on information about Khan giving nuclear technology to other countries -- prompting his removal in 2001 as head of the Khan Research Laboratories, the main nuclear lab named after him.