According to him, the UN "received requests from Russia and Ukraine to conduct an investigation."

“I have made the decision, in accordance with my powers and capabilities, to launch a fact-finding mission,” Guterres was quoted as saying by TASS.

Earlier, the UN stated that they were considering the possibility of investigating the attack on the pre-trial detention center in Yelenovka. 

Dmitry Polyansky, First Deputy Representative of Russia to the UN, said that the country expects the UN to immediately assess the shelling of the pre-trial detention center in Yelenovka.