Putin sent a telegram to his US counterpart Barack Obama expressing his condolences, and said "Russia is ready to help the US authorities with their investigation if necessary,” the Kremlin said on Tuesday in a statement on its website.
"Putin strongly condemned this barbarous crime and expressed his conviction that the fight against terrorism requires the active coordination of efforts by the global community,” the statement said.
Three people were killed on Monday and 144 injured – 17 of them critically – after two powerful explosions ripped through a crowd near the finish line of the Boston Marathon.
It is not yet clear who was responsible for the bomb attacks or the motive.
Obama vowed on Monday evening that those responsible for the blasts would be tracked down and punished, saying they would feel the "full weight of justice.”
"For Russia, which is about to stage a lot of large-scale events, this is a serious clarion call," Mutko told R-Sport. "Of course, we will toughen up our security measures," he added, echoing the sentiments of Russia's athletics chief Vyacheslav Balakhnichev, who vowed heightened security would be in place at the August 10-18 championships at Luzhniki stadium.