Jalandhar, July 19 -- Punjab police inspector Gurinderjit Singh Nagra, who was recently indicted by the Federal Bureau of Investigation (FBI) as part of 'Operation Hard Ball', was arrested on Saturday in Hoshiarpur district for allegedly trying to extort $400,000 (Rs.3.81 crore) from a family based in Los Angeles, officers said. He was produced in a Hoshiarpur court, which sent him to three-day police custody. The move comes a week after the FBI indicted Nagra and accused him of maintaining alleged links with gangsters. US prosecutors had said they would push for Nagra's extradition after his arrest. "We have charged him, and we will extradite him into the US," US attorney Bill Essayli said at a press briefing on July 8. Nagra, who served as station house officer in Tanda when the charges against him surfaced, was subsequently transferred to the police lines in Hoshiarpur. "Nagra has been placed under suspension and appropriate departmental proceedings have been initiated. The probe is ongoing," Jalandhar range deputy inspector general (DIG) Naveen Singla said. The case against him was registered under Section 308 (extortion) of the BNS and sections of the Prevention of Corruption Act, said police. The FIR concerned the murder of Balwinder Singh, a hardware store owner based in Miani village in Tanda on January 15, and the sections were added after the indictment. The indictment by the US Department of Justice (DOJ), which were unsealed as part of FBI's "Operation Hard Ball", alleged that Nagra worked with the Jaggu Bhagwanpuria gang. It said that the matter arose after Balwinder Singh's murder. A day after the killing, alleged gangsters Jashal Chambal and Gurlal Rudiana claimed responsibility for it. Hoshiarpur DSP Davinder Singh Bajwa and Nagra on May 24 announced the arrests of Gurman Singh and Sawaraj Singh in the case....