Delhi Police has registered a case against unidentified persons for allegedly threatening Rahul Sharma, who had alleged a "scam" in the Public Works Department(PWD) of Delhi Government.
Sharma had filed a complaint on May 11 about receiving a phone call asking him to not get involved in "social service". He had given a complaint to the Parliament Street police station and a case of criminal intimidation was registered on June 3, police said.
He said that he had received the call while he was on his way after having a meeting with Anti-Corruption Branch chief Mukesh Meena.
On May 31, two unidentified persons had attempted to open fire at Sharma's car in Greater Noida but he had escaped unhurt.
Three separate FIRs have been registered by the ACB in connection with the alleged PWD scam, including one against a company owned by Arvind Kejriwal's late brother-in-law Surender Kumar.