"The United States condemns the terrorist attacks that struck the Russian city of Volgograd and sends deepest condolences to the families of the victims with hopes for the rapid healing of those wounded," said Caitlin Hayden, spokesperson of the National Security Council, White House.
The US stands in solidarity with the Russian people against terrorism, she said in a statement.
"The US government has offered our full support to the Russian government in security preparations for the Sochi Olympic Games, and we would welcome the opportunity for closer cooperation for the safety of the athletes, spectators, and other participants," Hayden said.