The ATS had unearthed a gang involved in extorting money from candidates appearing in army recruitment rallies by arresting four persons last month.
"During interrogation of the four middlemen, the involvement of medical officer Lt Col Dr Jagdish Puri came to light.
"Posted in Jodhpur, the officer was responsible for issuing medical fitness certificate for the candidates and this was the last process of the recruitment," Umesh Mishra, ADG-ATS and SOG, told PTI today.
"His job was to issue the medical fitness certificate, which is the last stage of the recruitment," Mishra said.
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"The officer was questioned in Jaipur and was placed under arrest yesterday with the permission of the Army authorities," he said, adding, that the Army authorities gave full cooperation in the investigation.
Puri, who has been booked for cheating, criminal breach of trust and criminal conspiracy, will be produced before a local court today.
He was a member in most of the medical boards constituted for Army rallies for recruitment of soldiers held in Jodhpur, Sikar, Jhunjhunu, Sawaimadhopur, Alwar and Jaipur.
Following inputs from Military Intelligence, the ATS had arrested ArjunSingh, Nand Singh Rathore, Sunil Vyas and Mahendra Singh on May 23.
A sum of Rs 1.79 crore in cash and documents of four candidates attending a recruitment rally in Udaipur were also recovered from the house of Nand Singh in Jaipur.
"How many candidates in all were benefited by them is the part of ongoing investigation.Initially, the doctor has confessed to have benefited around two dozen candidates in one and a half year," he said.
"He will now be interrogated in detail," Mishra said.