MOSCOW, March 23. /TASS/. Picnic rock band, whose concert was supposed to be held at Moscow’s Crocus City Hall on Friday, cannot contact one of its members after the terrorist attack, the band’s managing director Yuri Chernyshevsky told TASS.

"We can’t contact one [band member], we don’t know if he left Crocus," he said, without specifying which member of the band he was talking about.

A terrorist attack was carried out at the Crocus City Hall music venue in the city of Krasnogorsk near Moscow on Friday evening. Unidentified gunmen armed with assault rifles went on a shooting spree. An explosion rocked the building, starting a fire. The special services are conducting a search operation. Moscow Mayor Sergey Sobyanin canceled all mass events in the capital in the next two days, and a number of other Russian regions followed suit.