UNITED NATIONS, December 17. /TASS/. The United Nations has refrained from condemning the terror attack on Russia’s nuclear defense chief Igor Kirillov, confining itself to calls for restrain from further escalation.

"We are aware of the reports regarding the incident that took place in Moscow today, where that led to the death of two Russian military officials. We urge all parties to exercise restraint and refrain from actions that could further escalate tensions," Stephane Dujarric, a spokesman for the UN Secretary General, said.

Russian First Deputy Permanent Representative to the United Nations Dmitry Polyansky said earlier in the day that Russia will raise this issue at a UN Security Council meeting on Western weapons supplies to Ukraine on December 20.

Russian Security Council Deputy Chairman Dmitry Medvedev said earlier that the Kiev regime had admitted its role in plotting a terrorist attack against Chief of Russia’s Radiation, Chemical and Biological Protection Troops Lieutenant General Igor Kirillov.

On the morning of December 17, an explosive device planted in a scooter exploded near the entrance of a residential building on Ryazansky Avenue in Moscow, investigators revealed. Kirillov, 54, and his aide were killed in the blast. The Russian Investigative Committee opened a criminal case on charges of murder, terrorism, and illegal possession of arms and munitions (articles 105, 205, and 222 of the Russian Criminal Code). An investigation is underway.