MOSCOW — A bomb exploded in a supermarket in the Russian city of St. Petersburg on Wednesday, injuring 10 and raising new concerns of terrorism just weeks after Russian authorities claimed a tip from the United States helped ward off a major attack in the same city.
The bomb, which authorities called a homemade explosive device with the strength of about half a pound of TNT, exploded in a locker at a Perekryostok supermarket in the northeast of St. Petersburg, Russia’s second-largest city and the country’s cultural capital. The bomb was packed with what authorities called killing agents, which local reports said were ball bearings.
Authorities did not immediately call the explosion a terrorist attack, classifying it instead as the attempted murder of two or more people, without naming the intended targets.
Nine people were hospitalized, including one in critical condition with shrapnel wounds to the stomach. As of Wednesday evening, none of the victims had died.
Local reports said that the explosion knocked down the door to the supermarket and left a hole in the wall.