4 charged with terrorism following Moscow concert hall attack

Four persons allegedly directly involved in the Moscow concert hall attack have been charged with terrorism, local media reported on Monday.

A Moscow district court sent all the four suspects, identified as citizens of Tajikistan, to pre-trial detention.

They will remain in custody until May 22, Russia’s TASS news agency reported.

On Friday night, gunmen fired indiscriminately at concertgoers at Crocus City Hall in sub-urban Moscow, leaving at least 137 people dead.

A large blaze later led to the collapse of the building’s roof.

Russian President Vladimir Putin said in a televised address that preliminary investigation showed the Ukrainian side was preparing a “window’’ for the perpetrators to cross the border.

He promised to identify and punish all those behind the attack, and declared March 24 a day of national mourning.