In this file photo taken on Sept. 22, 2018, members of Iran's IRGC march during the annual military parade marking the anniversary of the outbreak of the 1980-1988 war with Iraq, in the capital Tehran. (Xinhua/AFP)

Senior Saudi and Iranian officials have held direct talks in a bid to repair relations between the two regional rivals, four years after they cut off diplomatic ties, the Financial Times reported on Sunday, citing officials briefed on the discussions.

The first round of Saudi-Iranian talks took place in Baghdad on April 9, including discussions about attacks on Saudi Arabia by Yemen's Iran-aligned Houthi group and were positive, the FT report added, citing one of the officials.

Saudi authorities did not immediately respond to the request for comment, and Iranian officials were not immediately available for comment. The FT said a senior Saudi official denied any talks with Iran.

The report comes as Washington and Tehran try to revive a 2015 nuclear accord to which Riyadh had been opposed and as the US presses for an end to the Yemen conflict, seen in the region as a proxy war between Saudi Arabia and Iran.

Riyadh has called for a nuclear deal with stronger parameters and said Gulf Arab states should join any negotiations on the accord to ensure that this time it addresses Iran's missiles program and its support for regional proxies.

Saudi Arabia and its allies supported former US President Donald Trump's decision in 2018 to quit the world powers' nuclear agreement and reimpose sanctions on Tehran, which responded by breaching several restrictions on its nuclear activities. A Saudi foreign ministry official said earlier in April that confidence-building measures could pave the way for expanded talks with Gulf Arab participation.