CCTV footage show the moment of Volgograd explosion

“According to initial information, the explosive device (on the trolley bus) was at least the equivalent of four kilograms (almost nine pounds) of TNT. Like the device at the train station, it was stuffed with shrapnel, and, because the shrapnel was identical in both devices, this confirms to the investigators that the two terrorist acts were connected. In all likelihood they could have been prepared in the same place,” said Markin. Russian television has released CCTV footage of Sunday’s suicide bomb explosion inside the train station. It was detonated when a police officer became suspicious and rushed forward. The footage shows one male suspect, one female suspect and the moment of the explosion.