TEHRAN — Iranian Muslims will miss the annual Hajj pilgrimage in September because Tehran and Riyadh failed to agree organizational details after they cut diplomatic ties in January, the IRNA news agency reported on Thursday.

The official Iranian agency quoted Tehran’s Islamic Guidance and Culture Minister Ali Jannati as blaming Riyadh for the impasse. Last year’s Hajj was marred by the death of over 2,000 pilgrims, 464 of them Iranian, in a stampede during the crowded pilgrimage in Saudi Arabia.

Tensions between the regional rivals led to Riyadh breaking off diplomatic ties in January after protesters in Iran attacked Saudi diplomatic missions there following the execution of Sheikh Nimr al-Nimr.

“The arrangements have not been put together and it’s now too late,” said Jannati, whose ministry oversees arrangements for Iranian pilgrims. “The sabotage is coming from the Saudi side.”