According to the petition of the JIT head, National Accountability Bureau (NAB) served notice to Irfan Naeem Mangi to pressure him in the probe.
It further said personnel of IB circled residence of Bilal Rasool on May 24 and threatened his helper.
Record of the inquiry into Chaudhry Sugar Mills was tampered with on orders of the SECP Chairman.
On the other hand, Prime Minister (PM) Nawaz Sharif is to appear before the JIT on June 15, a notification for which came to light on Sunday but was issued on June 8.