Chandigarh: Punjab Police have arrested its officer Gurinderjit Singh Nagra, who has been facing FBI allegations of $400,000 extortion linked to international crime syndicates. Under ‘Operation Hard Ball’, US authorities accused Inspector Nagra, the former Station House Officer (SHO) of the police station in Tanda town in Hoshiarpur district, of colluding with the Jaggu Bhagwanpuria.