"The Secretary-General reiterates that no cause can justify such violence. Targeting civilians in this way is a clear violation of international law, including international human rights law," a statement issued by his Spokesperson Stephane Dujarric said.
According to media reports, about 2,000 members of the religious body, known as the Afghan Ulema Council, had gathered at a tented facility, and the explosion near the venue's entrance caused many causalities, claiming the lives of not only religious scholars, but also security officers and civilians.
"The Secretary-General extends his deepest condolences to the families of the victims and wishes a speedy recovery to those injured. The United Nations stands with the people and Government of Afghanistan as they endeavor to build a peaceful future for their country," the statement added.