PML-N leader Khawaja Asif has been summoned to appear before NAB on April 1.
NAB has asked him to bring all relevant documents in two cases: the foreign assets case and owning assets beyond his known sources of income case.
The bureau has already taken account details of the former foreign minister. He will be questioned about his foreign assets.
In August 2018, an inquiry was initiated against the PML-N leader for allegedly making suspicious transactions and having assets beyond his known sources of income.
PML-N leaders such as Shahid Khaqan Abbasi, Hamza Shahbaz, Shehbaz Sharif, Khawaja Saad Rafique and his brother Khawaja Salman Rafique among others are already being investigated by NAB in different cases.