The Tamil Nadu CB-CID team investigating the Chennai train robbery arrived in Kochi as it widened its probe in the case.
The Crime-Branch Crime Investigation Department (CB CID) team from Chennai had arrived at the Ernakulam South station yard to check the bogies that had undergone an annual maintenance review two days before the heist.
The bogies were at the yard for a week now and the probe team has verified the CCTV visuals besides cross checking telephone call records of officials and others.
A week had passed and the Tamil Nadu cops are still grovelling in the dark to get a clue about the sensational robbery.
In the daring attempt, dacoits managed to gain entry into a coach in a moving train, carrying soiled currency notes to the tune of `342 crore from Salem, a western city in Tamil Nadu, to Chennai, and made off with `5.78 crore. The thieves made a hole, enough to gain entry for a person, on the roof of the coach with a machine cutter.
Meanwhile, stung by the unprecedented loot of Rs. 5.75 crore from Train No 11064 Salem-Chennai Express last week, Southern Railway authorities are considering installing surveillance cameras in parcel vans transporting high-value consignments.
The RBI was transporting Rs 342 crore worth used currency notes from Salem to Chennai on three special coaches of Salem-Chennai Egmore Express train when the heist was carried out.