Saudi Foreign Minister Prince Faisal Bin Farhan (left) with his Iranian counterpart Hossein Amir-Abdollahian.
In a tweet, Iran's Amirabdollahian said the Thursday meeting with his Saudi counterpart was "positive", adding that "the emphasis on stability and sustainable security" were among the issues agreed upon and "on the common agenda."
In March, Chinese President Xi Jinping helped broker the surprise deal in a display of Beijing's growing influence in the Middle East. China's role in the breakthrough shook up dynamics in a conflict-ridden region where the United States has for decades been the main mediator.
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In a meeting with the Iranian and Saudi envoys, Chinese Foreign Minister Qin Gang said Beijing supports countries in the Middle East in upholding their strategic independence, getting rid of external "interference" and keeping the region's future in their own hands.
The rapprochement could mean improved security for Saudi Arabia as it pursues its vast Vision 2030 project to modernise and diversify its long oil-dependent economy.
Tehran and Riyadh, according to the joint statement, underlined the importance of reviving a security pact signed in 2001, under which both sides agreed to cooperate to tackle terrorism, drug-smuggling and money-laundering, as well as a trade and technology pact from 1998.