The White House said on Friday that the United States had warned Russian authorities earlier in March of a possible terrorist attack targeting large gatherings in Moscow.
The announcement came hours after a gun attack in the Russian capital killed at least 60 people.
“Earlier this month JAV government had information about a planned terrorist attack in Moscow, possibly targeting large gatherings, including concerts," White House National Security Council spokeswoman Adrienne Watson said.
She added that Washington had shared this information with Russian authorities.
According to A. Watson, the administration of US President Joe Biden has long followed the so-called duty to warn policy, according to which the United States warns countries or groups when it receives intelligence about specific threats to kidnap or kill.
Gunmen dressed in camouflage opened fire at a rock concert in a suburb of Moscow earlier on Friday, killing more than 60 and injuring at least 100 people, as well as starting a fire, authorities said.
The Islamic State (IS) claimed responsibility for the attack. US officials told the AFP news agency they believed IS had indeed staged it.
Russia's Investigative Committee said on Saturday that more than 60 people had been killed, raising the previous toll of 40, Russian news agencies said.
