"The Secretary-General reiterates that nothing justifies terrorism. He urges the Government of Pakistan to take all necessary measures to bring to justice the perpetrators of these despicable acts and to do its utmost to protect its citizens, including all minorities," a statement issued by his spokesperson in New York said.
The statement added that the attacks yesterday were carried out during the holy month of Muharram and have claimed many lives, including many children.
The Secretary-General extended his condolences to the families of the victims and wishes the injured a swift recovery.
The blast took place despite stringent security measures put in place for the Ashura processions taken out on the 9th and 10th of Muharram by Shia Muslims.
In another attack on Thursday, 12 people were killed when a suicide bomber blew himself up at a Shia shrine in Balochistan.