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. Last Updated: 07/27/2016

Explosion in MGU Dormitory

A small bomb exploded in the hallway of a student dormitory at Moscow State University early Saturday morning, and authorities later found and destroyed a larger bomb in the same building, a campus security guard said Sunday.

Some 300 students were evacuated from dormitory "V," located in a wing of the main MGU building at Vorobyovy Gory, at around 5 a.m. on Saturday, shortly after a homemade bomb had detonated next to an elevator on the third floor, said the guard, who declined to give his name.

The bomb contained the equivalent of 50 grams of TNT, chief city prosecutor Yury Syomin said on NTV television.

Federal Security Service agents with sniffer dogs swept the building and discovered a larger improvised bomb on the ninth floor, the guard said.

The second bomb, which contained the equivalent of 500 grams of TNT contained in a metal can, was destroyed, Interfax reported.

Dormitory "V," which houses mainly chemistry and physics students, was cordoned off after the blast, but the university was operating normally by late Saturday, the guard said.

Roman, a 29-year-old philosophy student who lives in the adjacent dormitory "Zh," was awakened by the blast. "But the fire alarms woke most people up," said the student, who declined to give his last name.

The blast shattered a nearby window, and the lift doors were damaged, Roman said.

Roman said there were many rumors circulating around the campus about who was to blame for the blast. "But most people think it was just a couple of chemistry students messing around," he added.

He said the third floor of dormitory "V" was occupied by two or three chemistry students and a dozen physics majors.

The city prosecutor's office could not be reached for comment Sunday.

Authorities have classified the incident as hooliganism, Interfax reported.