137 people killed in Moscow terrorist attack, Putin talks with close aides. Russia marked the 24th as a day of mourning, and President Putin also lit a candle at the church of his official residence on the outskirts of Moscow to mourn the victims.

Russia has reported that a Tajik passport was found in the suspect's car, and according to the Russian presidential palace, President Putin agreed to strengthen counter-terrorism measures. Meanwhile, Amaq News, which is connected to the extremist group IS (Islamic State), released photos of the four people it said were the perpetrators, and reported that the attack was carried out by IS fighters.