Eyewitnesses said they heard two explosions on coaches S4 and S4 of the Bangalore-Guwahati Kaziranga express as it arrived at the Chennai railway station.
In what could be an initial breakthrough in the probe into twin blasts in the Bangalore-Guwahati Kaziranga express, a man who hurriedly got down from it at the Chennai central railway station has been spotted wearing a handkerchief to mask his face in CCTV footages of Bangalore railway station, police sources said on Saturday.