Leaders of the Muslim nations have accused Iran of supporting terrorism and meddling in the affairs of regional states, a move that could intensify the rift between Iran and Saudi Arabia.

“The conference deplored Iran’s interference in the internal affairs of the states of the region and other member states including Bahrain, Yemen, Syria and Somalia, and its continued support for terrorism,” reported news agency Reuters, citing the final communique of the 57-member Organisation of Islamic Cooperation (OIC) summit in Turkey.

The statement highlighted the need for “cooperative relations” between Iran and other Muslim countries, including refraining from the use or threat of force.

Both Turkey, which has assumed the three-year rotating presidency of the OIC, and Saudi Arabia are part of the US-led coalition against Islamic militants in Syria. They are also opposed to Syrian President Bashar al-Assad’s rule, which is supported by Iran. The Persian nation backs the Houthi movement in Yemen, which is battling the Saudi-backed president of Yemen in a conflict that has killed more than 6,000 people since March 2015.

A day before the communique, President Rouhani urged summit delegates to avoid sending out divisive messages. “No message which would fuel division in the Islamic community should come out of the conference,” said Rouhani, according to Iranian state television.