A downed drone that tried to attack Putin’s residence says Russia.

A pair of drones attacked President Vladimir Putin’s residence in the Kremlin in Moscow Tuesday night, but Russia said it defeated them and blamed Ukraine for the attempt. The drones crashed in the Kremlin without injuring anyone or damaging anything, the Kremlin said in a statement. Putin was not in the Kremlin then, his spokesman, Dmitry Peskov, told RIA Novosti. The Kremlin called the assault “an attempt on the life of the president” and said it had no evidence for the attack. Ukraine did not comment immediately. The statement said Russia “reserves the right to take retaliatory measures when and where necessary.” Attacking a complex that has symbolized Russian official power for centuries would be a dramatic step in bringing the threat of war home to the country. Russian missiles and drones have repeatedly struck Kyiv and other Ukrainian cities since Putin ordered the invasion of Ukraine in February last year, including as recently as this week. The claim comes as Russia prepares to celebrate Victory Day on May 9, a major holiday marking the Soviet triumph in World War II. Peskov said Putin would join a Red Square military parade on that day. Citing unspecified security concerns, about a dozen cities around Russia have canceled trains and other public activities for May 9. Many canceled fireworks. Moscow city authorities banned the use of drones in the capital shortly before the Kremlin released its statement, the state-run Tass news service reported. Russia deployed anti-aircraft weapons in and around the money last year to step up protection. In recent months, several reports have said drones of various sizes crashed in regions outside Moscow.