As part of the probe into the twin blasts on the Bangalore-Guwahati Express here on May 1, special teams of the Crime Branch-CID have reached Guwahati and Patna, agency sources said on Saturday.
Armed with the CCTV footage of two persons who were found moving in a suspicious manner in the Bangalore and Chennai Central railway stations, investigators would make inquiries with some passengers who travelled in S-4 and S-5 coaches up to Guwahati.
After preliminary inquiries, the State police and National Security Guard (NSG) officials revealed that the explosives were similar to those used in the Patna blasts, another team reached Patna.
“We want to examine the suspects arrested in the multiple blasts in Patna, which occurred hours before BJP leader Narendra Modi was to address an election rally there,” a CB-CID official said.
Main ingredientMeanwhile, forensic experts who analysed the debris from the scene of blast indicated that Ammonium Nitrate was the main ingredient. Investigators were seeking the help of Information Technology experts to extract a better visual from the CCTV footage.
The footage in Bangalore showed a man taking the escalator and walking towards Platform No. 3, from where the train departed, sources said.
“Since he was carrying a bag, it is possible that there was another person who either boarded the train in Bangalore or the following stations. We are seeking the assistance of IT experts to improve the quality of images found in the CCTV footage,” a CB-CID official said.
