Carrying chits to exam halls is passe. Patna police recovered undergarments and shirts fitted with electronic devices among other hi-tech devices on the eve of Sunday’s intermediate level combined examination (second phase) of the Bihar Staff Selection Commission (BSSC) that were held among rumours of question paper leak.The police recovered 13 Bluetooth and credit-card type devices with SIM card and button batteries, power banks, 10 other batteries, 90 earphones, 10 cellphones and four separate SIM cards from a rented house on Kanti factory road under Agamkuan police station.Vests and shirts with wires and sleek devices stitched to them were also recovered. The cops claimed that the devices were to facilitate cheating in examinations and took credit for having foiled an organised gang’s bid to indulge in largescale malpractices.The police also arrested three persons — Pawan Kumar (from Fatuha), Bipin Kumar (Nalanda) and Navneet Kumar Rai (Motihari) — in this connection.Santosh Kumar/HT photoAn electronic device to facilitate cheating in examSenior superintendent of police (SSP) Manu Maharaaj said Pawan was the mastermind of the gang involved in several examination paper leak cases since 2014. Pawan admitted to the police that he had “managed exam centres” for aspirants with the connivance of several government officers in the competitive exams of police, excise and prison departments, the SSP added.READ: 5 held in army job racket; Bihar police say armymen involvedSources said Pawan came in contact with a secretary-level officer through a common acquaintance. He disclosed that the officer told him about the countrywide nexus of paper solvers and asked him to look for suitable opportunities so that both of them could make quick bucks. Maharaaj claimed that the arrested trio disclosed the name of gang members and police were carrying out raids to nab them. The BSSC conducts the exam for appointment of clerks in the state government. The first phase exam was held last Sunday amidst reports of question paper leak, which the commission denied.Earlier on January 28, police had arrested five members of a gang from Shahpur police station area and busted a racket allegedly involved in efforts to leak papers of Army recruiting and BSSC exams.