"The terrorist blast in a Shiite mosque in Southern Pakistan, Shikarpur region, which martyred and injured a group of worshipers unveiled again the inhumane face of extremist sectarian streams more than ever," Larijani said in a message on Saturday.
He expressed confidence that such incidents cannot damage Muslims' unity and determination and will certainly increase their faith.
He condemned the terrorist attack and wished God's mercy for the martyrs of the incident and rapid recovery for the wounded.
Earlier today, the Iranian foreign ministry also strongly deplored the terrorist attack that claimed the lives of tens of worshipers.
"The Islamic Republic of Iran condemns the terrorist moves against the innocent people of all tribes and religions in Pakistan, believing that such actions run counter to the teachings of Islam and human values," Foreign Ministry Spokeswoman Marziyeh Afkham.
She underlined the necessity for campaign against extremism and terrorism, and called for strengthening cooperation and solidarity among the regional states
