The Government Railway Police and the Railway Protection Force here started analysing CCTV footage from the City station soon after the >twin blasts in a Guwahati-bound train from there at the Chennai Central railway station on Thursday.
“We have a hunch that the suspect could have boarded the train from the [Bangalore] city railway station, which left around 11.30 p.m. on Wednesday, and investigations are on to locate and identify the suspect,” a senior police officer said.
The 40 cameras at various points of the station could have recordings for three hours up to the departure of the train, another senior police official said.
The police have obtained call details from mobile-phone towers near the station.
While a Railway Police team headed by a Deputy Superintendent of Police has left for Chennai from here, a special team comprising National Investigation Agency and Tamil Nadu Crime Branch officials has arrived in Bangalore to coordinate the investigation.
