The UN Human Rights Office "remains concerned that the authorities have still not taken appropriate measures to ensure effective investigations into the 2 May 2014 events [Odessa massacre], nor to protect the independence of the judiciary," the report says.
The report also recommends that the law in Ukraine is amended to allow prosecutions for all killings that took place during the Maidan events in February 2014.
"OHCHR is concerned that the investigation into the killings of 13 law enforcement agents has been hampered by the provisions of the law of 21 February 2014, which provides that all people who participated in mass protests and are suspected or accused of crimes are exempted from criminal responsibility," the report reads.
On May 2, 2014, pro-Kiev radicals blocked anti-government protesters in Odesa's House of Trade Unions and set the building on fire by hurling Molotov cocktails inside. The tragic incident left some 50 people dead while the overall number of casualties exceeded 250.