The Office of the United Nations High Commissioner for Human Rights has sent a special team to the village of Groza to gather information about the rocket attack that killed at least 52 people.
The rocket hit a cafe and a shop as villagers gathered for a wake for a fallen Ukrainian soldier.
The Office reported that the missile was probably launched by Russia, but there is no exact information yet. Russia has not commented on the incident.
"The UN High Commissioner for Human Rights, Volker Türk, who has seen the horrific consequences of such strikes himself, is shocked and condemns these killings," said the Office's spokeswoman, Elizabeth Trossell, in Geneva.
"He has sent a field team to the site to speak with survivors and gather more information," she added.
According to Trossell, before the Russian invasion, the village had a population of about 300.
"It's not known how many people continued to live there, but given the large number of people who died, it's clear that [the consequences of the attack] affected everyone in this small community."
At the same time, journalists of the American newspaper Washington Post, who visited the site of the attack on the cafe in the village of Groza, Kharkiv region, report that almost all of the dead were civilians.
The newspaper's correspondent writes that he saw only one body among the victims of the strike in a military uniform.
"The morgue staff say they have not seen any evidence of the presence of many soldiers among the dead, and most of the victims appear to be elderly," the publication says.
In many cases, it is difficult to identify people because they have suffered very significant injuries, the journalists note.
In response to a request from journalists to comment on the strike on the village of Groza, Kremlin spokesman Dmitry Peskov reiterated that Russian troops only hit military targets and infrastructure.
"On Friday, the Kharkiv morgue looked like a mass murder scene: several dozen employees were sorting through the bodies of people," the American newspaper writes.
As a reminder, on Thursday, October 5, a cafe was destroyed as a result of shelling in the village of Groza, where local residents gathered for a wake for an Armed Forces soldier who died at the front. The wake was attended by about 60 people, at least 52 are believed to be dead. A six-year-old child was among the dead.