NEW YORK, March 24. /TASS/. The attack of terrorist against the Crocus City Hall concert venue in the Moscow Region is a tragedy, Vice President of the United States Kamala Harris said in an interview with ABC television.

"Let me start by saying what has happened in an act of terrorism and the number of people who've been killed is obviously a tragedy and we should all send our condolences to those families," Harris said.

The US Vice President at the same time noted that Washington has no information proving that Ukraine is associated with the terrorist act. The Islamic State extremist organization (prohibited in Russia) is responsible for that, she added.