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.
Iran could be producing enriched uranium in a few months, the head of the UN nuclear watchdog Rafael Grossi was quoted as saying on Sunday, raising doubts about how effective US strikes to destroy Tehran's nuclear programme have been.
The Jerusalem District Court has cancelled this week's hearings in Prime Minister Benjamin Netanyahu's long-running corruption trial, accepting a request the Israeli leader made citing classified diplomatic and security grounds.
The Israeli military ordered Palestinians to evacuate areas in northern Gaza on Sunday before intensified fighting against Hamas, as US President Donald Trump called for an end to the war amid renewed efforts to broker a ceasefire.
Russia used hundreds of drones, cruise and ballistic missiles to attack western, southern and central Ukraine overnight, damaging homes and infrastructure and injuring at least six people, local authorities said on Sunday.
At least seven Palestinians were killed and several others injured early Sunday in a series of Israeli airstrikes targeting Gaza City and Khan Younis in the southern Gaza Strip, Palestinian News & Information Agency (WAFA) reported.