A case has been registered against former provincial minister Fakhar Jahan, while another has been filed against former minister Riaz Khan.
Officials have also sought details of government vehicles in the possession of Shafi Jan. In addition, a case has reportedly been registered against a provincial assembly member from Bajaur.
Authorities have contacted the provincial Administration Department to obtain records of government vehicles previously used by former PTI provincial ministers.
The cases were registered in Buner and Bajaur districts, while officials are compiling details of government vehicles and other assets that have yet to be returned.