MOSCOW, February 3. /TASS/. Armen Sarkisyan, head of the Boxing Federation of the Donetsk People’s Republic (DPR), is in intensive care after suffering injuries in a blast that occurred in the Alye Parusa residential building in Moscow, a source in response teams told TASS.

"Sarkisyan is in ICU. He is being prepared for surgery," he said, adding that doctors could not give any prognosis.

An unidentified explosive device went off in the lobby of a high-rise residential building in northwestern Moscow on Monday morning. The blast killed Sarkisyan’s bodyguard, and left another three people injured. A criminal investigation has been launched into the incident.