It expressed condolences to Muslims all over the world over Sheikh Nimr’s martyrdom and described Riyadh’s move as an attack on freedom and humanity.
The statement called on Muslims across the world to hold rallies in protest at the execution and condemn those who commit such crimes.
Sheikh Nimr was among 47 individuals who were put to death by Saudi Arabia on Saturday.
The senior cleric had been arrested in 2012 in the Qatif region of Saudi Arabia’s Shia-majority Eastern Province, which was the scene of peaceful anti-regime demonstrations at the time.
He had been charged with instigating unrest and undermining the kingdom’s security. He had rejected the charges as baseless.