The CB-CID team is reportedly questioning five persons who recently quit their jobs with the parcel office of the Egmore railway station, in connection with the theft of crores of rupees, from a Salem-Chennai Egmore Express on 9 August.
According to sources, the five men from North India, who had left their jobs recently are now being quizzed by the CB-CID team.
Meanwhile, experts who have been in the field of metal cutting have rejected popular theories of using machine or laser cutters to cut open the roof of Salem Express, from which Rs 5.74 crore was looted a few days ago.
While the police and Southern Railway are yet to nail the suspects, a lot of speculation over the modus operandi of the robbers was doing rounds in social media platforms.
Even as the Crime Branch CID police formally commenced their investigation into the recent daring heist on board the Salem-Chennai Express, the security advisor of the Reserve Bank of India (RBI), Mumbai K. P. Raghuvanshi held discussion with senior police officers in Salem on Friday on steps to prevent the recurrence of such incidents.
Raghuvanshi met the Salem Commissioner of Police Sanjay Kumar and a few other senior officers and discussed about the security protocol followed when huge money was transported by banks.