Putin visiting the area
At the time of the attack, President Vladimir V. Putin was in the St. Petersburg area.
The scene of the blast
Russian news outlets reported that the bomb that exploded near the Technology Institute metro station was a homemade device, filled with shrapnel. Another bomb found near the Vosstaniya metro station was disarmed shortly after.
www.vk.com/spb_today, via Associated Press
Anton Vaganov/Reuters