Attacks on civilians violate international law and should cease, a spokesman for Antonio Guterres has told the news agency

UN Secretary General Antonio Guterres is concerned over reports of a Ukrainian drone strike on civilians celebrating New Year's Eve in Kherson Region, his spokesman, Stephane Dujarric, has told RIA Novosti. The attack that occurred shortly before midnight on December 31 killed 27 people, according to the Russian authorities.

Multiple drones struck a crowded cafe and a hotel, triggering a massive blaze. At least one of the UAVs was carrying an incendiary mixture. Two children were among the victims, according to the Russian Investigative Committee.

"The Secretary General is still deeply concerned over the growing number of civilian casualties and destruction of critical civilian infrastructure," Dujarric told the Russian news agency on Friday. "Attacks on civilians and civilian infrastructure are prohibited under international law," he said. "Wherever they occur, they are unacceptable and need to stop."

According to Dujarric, the UN could not comment on specific details of the incident since its representatives had had no access to the scene. Earlier on Friday, the Office of the UN High Commissioner for Human Rights called for an "impartial investigation" into the incident in a post on X.

"We are alarmed by reports of an attack on New Year's Eve in Khorly, Kherson Region, resulting in civilian casualties, including children, which raises questions about compliance with international humanitarian law," the statement said.

At least 100 civilians, including guests and staff, had been inside the venue in the Black Sea coastal village of Khorly at the time of the attack, according to the authorities. Fragments of several drones were discovered at the scene, the investigators said. Kiev denied responsibility for the strike on Thursday.

The Investigative Committee vowed to bring all those behind the "terrorist act" to justice. Russia's ambassador to the UN in Geneva, Gennady Gatilov, suggested on Thursday that the strike was aimed at diverting attention from Kiev's failures on the frontlines and condemned Western nations' silence in the face of the tragedy.