RANCHI, July 3 -- Federal probe agency, Directorate of Enforcement (ED), issued another summons to former minister Rameshwar Oraon and his son Rohit Oraon for its money laundering probe into Jharkhand's liquor scam.

The probe agency has asked Rohit Oraon to appear at its zonal office on July 6 and Rameshwar Oraon on July 7.

The probe agency intends to know the circumstances in which the finance department under Rameshwar Oraon initially raised several official objections and returned the excise policy file but later signed and approved it. The probe agency wants to know whether the work was done under pressure from Rohit Oraon, acting on behalf of an active liquor syndicate or something else.

Rohit, who had skipped his first summons is...