Sweden has released a convicted Iranian war criminal as part of a prisoner swap deal.

Tehran and Stockholm carried out the switch, which saw a European Union diplomat and another man released in exchange for Hamid Nouri, who was found guilty of being complicit in the 1988 mass executions in the Islamic Republic.

Nouri was arrested in 2019 as he travelled in Sweden as a tourist.

This likely prompted the detention of the two Swedes, part of a long-running strategy by Iran to use those with ties abroad as bargaining chips in negotiations with the West.

While Iranian state television claimed that Nouri had been “illegally detained”, Swedish Prime Minister Ulf Kristersson said diplomat Johan Floderus and a second Swedish citizen, Saeed Azizi, had been facing a “hell on earth”.

“Iran has made these Swedes pawns in a cynical negotiation game with the aim of getting the Iranian citizen Hamid Nouri released from Sweden,” Mr Kristersson said on Saturday.

“It has been clear all along that this operation would require difficult decisions – now the government has made those decisions.”

State TV showed film of Nouri limping off a plane at Mehrabad International Airport in Tehran and embracing his family.

“I am Hamid Nouri. I am in Iran,” he said. “God makes me free.”

Oman mediated the release, its state-run news agency reported.

In 2022, the Stockholm District Court sentenced Nouri to life in prison.

It identified him as an assistant to the deputy prosecutor at the Gohardasht prison outside the Iranian city of Karaj.

The 1988 mass executions came at the end of Iran’s long war with Iraq.

After Iran’s then Supreme Leader Ruhollah Khomeini accepted a United Nations-brokered ceasefire, members of the Iranian opposition group Mujahedeen-e-Khalq, backed by Saddam Hussein, stormed across the Iranian border in a surprise attack.

Iran ultimately blunted their assault but the attack set the stage for the sham retrials of political prisoners, militants and others that would become known as “death commissions”.

International rights groups estimate that as many as 5,000 people were executed. Iran has never fully acknowledged the executions, apparently carried out on Mr Khomeini’s orders, though some argue that other top officials were effectively in charge in the months before his 1989 death.

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Late Iranian president Ebrahim Raisi, who died in a helicopter crash last month, was also involved in the mass executions.

Mr Floderus was arrested in April 2022 at Tehran airport while returning from a holiday with friends. He had been held for months before his family and others went public about his detention.

Mr Azizi’s case was not as prominent but in February the group Human Rights Activists in Iran reported that the dual Iranian-Swedish national had been sentenced to five years in prison by Tehran’s Revolutionary Court on charges of “assembly and collusion against national security”.

The group said Mr Azizi has cancer.

Eight Israeli soldiers have been killed inside Gaza, the Israeli military has confirmed.

The military personnel were killed in a blast in the southern city of Rafah on Saturday morning, according to the Israeli military.

It comes amid Israel’s ongoing offensive there and its operation to rescue the remaining hostages taken by Hamas militants on 7 October.

Saturday’s is the deadliest incident for Israeli soldiers since January when 21 were killed when two buildings collapsed in central Gaza.

The eight dead are believed to have been driving in a convoy following an overnight offensive against Hamas, according to the Times of Israel, and died inside an armoured vehicle.

One has been named as Captain Wassem Mahmoud, 23, of the Combat Engineering Corps’ 601st Batallion. The families of the other seven have been informed and will be named in due course.

More than 37,000 Palestinians have been killed since the start of the conflict, according to the Hamas-run health authorities in Gaza.

Firefighters rescued 28 people who were stuck dangling 100ft upside down on a ride at an amusement park in Oregon.

One person with a pre-existing medical condition was taken to hospital as a precaution after the AtmosFEAR ride stopped, Oaks Amusement Park, in Portland, said in a statement posted on social media.

However, they said no one was injured in the incident.

Chris Ryan said he and his wife, who were at the park for his birthday were just about to go on the ride – which operates like a pendulum, with the capacity to swing riders completely upside down – when they saw it was stuck.

He heard people saying: “Oh my God, they are upside down.” He said they decided to walk away because of “how scary the situation was”.

They eventually got on a Ferris wheel and heard a loudspeaker announcement that the park was closed and that people should evacuate.

Portland Fire and Rescue said on X that firefighters worked with engineers at Oaks Park, which first opened in 1905, to manually lower the ride, but that crews had been preparing to conduct a high-angle ropes rescue if necessary.

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When the ride stopped, park staff immediately called the emergency services, who arrived around 25 minutes later.

Maintenance workers were then able to return the ride to its unloading position minutes later, the park said in a statement.

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The ride has been in operation since 2021 and has not had any prior incidents, the park said. It will remain closed until further notice.

The park said it would work with the ride’s manufacturer and state inspectors to determine the cause of the stoppage.

“We wish to express our deepest appreciation to the first responders and our staff for taking prompt action, leading to a positive outcome today, and to the rest of the park guests who swiftly followed directions to vacate the park to make way for the emergency responders to attend to the situation,” it said.

Oaks Park’s website says it offers a “uniquely Portland blend of modern thrills and turn-of-the-century charm on a midway that has delighted generations of Northwesterners”.