Rival regional powers Iran and Saudi Arabia resumed talks in the Iraqi capital after they were suspended in March, Iran's semi-official Nour News reported.
Nour News is affiliated with the country's Supreme National Security Council, however, there was no confirmation from Saudi Arabia or Iraq on the resumption of the talks.
"The latest positive meeting has raised hopes for the two countries to take steps toward the resumption of ties,” said Nour News. It did not say when the fifth round of talks was held.
Riyadh severed ties with Tehran in 2016 after Iranian protesters stormed the Saudi embassy in the Iranian capital following the execution of a Shi'ite cleric in Saudi Arabia.
Iran suspended the talks in March without giving a reason for the decision that came as a new round of negotiations was due to start. The move came after Saudi Arabia executed 81 men in its biggest mass execution in decades. Tehran condemned the executions that activists said included 41 Shi'ite Muslims.
Predominantly Sunni Muslim Saudi Arabia and Shi'ite Iran, which are locked in proxy conflicts around the region, started direct talks last year to try to contain tensions.
Saudi Arabia and Iran have backed opposing sides in regional conflicts and political disputes in Syria, Lebanon and Iraq for years, and Saudi Arabia has led an Arab coalition waging war against the Iran-aligned Houthi movement in Yemen since 2015.
Lebanon's Hezbollah warned Israeli residents to evacuate towns within 5 km of the border between the countries in a message posted on its Telegram channel in Hebrew early on Friday.
The US House of Representatives rejected an effort on Thursday to stop President Donald Trump's air war on Iran and require that any hostilities against Iran be authorized by Congress, backing the Republican president's military campaign.
Foreign ministers from the Gulf Cooperation Council (GCC) and the European Union have strongly condemned the Iranian attacks targeting GCC states, calling them a direct threat to regional and global security.
US President Donald Trump claimed the right to join Iran in deciding its next leader as the war escalated, with US and Israeli jets hitting areas across the country and Gulf cities coming under renewed attack.
The United States and interim authorities in Venezuela have agreed to re-establish diplomatic and consular relations, the U.S. State Department said on Thursday, aiming to foster a peaceful transition to elect a new government in the South American country.
His Highness Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, Crown Prince of Dubai and the UAE's Deputy Prime Minister and Defence Minister, has discussed the latest regional developments with Saudi Defence Minister Prince Khalid bin Salman bin Abdulaziz Al Saud.