MOSCOW (REUTERS) - Surveillance cameras in St Petersburg's metro system may have captured images of the person suspected of organising Monday's (April 3) deadly train blast, Russian news agency Interfax quoted a source as saying.
"Images of the suspected organiser of the metro blast were captured on metro station cameras," the source said.
The explosive device may have been left in a briefcase in a metro train carriage, the source added.
CCTV images of the man are circulating on social media. The images appear to show a bearded man.
Russia’s National Anti-Terrorist Committee said another explosive device had been found at a different metro station, but it had been made safe.
The device was also filled with shrapnel, according to the state security agency FSB.