MOSCOW. April 2 (Interfax) - Experts have estimated that the bomb that detonated inside a building of St. Petersburg's Mozhaisky Military Space Academy on Tuesday could have an explosive power of up to 500 grams of TNT equivalent, an informed source told Interfax.
The explosive device consisted of bursting plastic explosive and a clockwork, the source said.
The bomb's explosive power was probably up to 500 grams of TNT, the source said.
The same source has revealed that currently, members of security services are inspecting the incident scene.