Pope Francis is in a critical condition after a “prolonged respiratory crisis” that required a high-flow of oxygen and is “suffering more than yesterday”, the Vatican has said.

The 88-year-old has been in hospital for more than a week being treated for double pneumonia and chronic bronchitis.

In an update on Saturday evening, the Vatican said “the Holy Father’s condition continues to be critical”, adding that this morning he “presented with a prolonged asthmatic respiratory crisis” which required the application of high-flow oxygen.

He also had blood transfusions after tests revealed thrombocytopenia, which is associated with anaemia.

“The Holy Father continues to be vigilant and spent the day in an armchair even though he was suffering more than yesterday. At the moment the prognosis is reserved,” the Vatican’s statement said.

In an update earlier on Saturday morning – the shortest since Francis was admitted to hospital on 14 February – the Vatican said he will not lead Sunday prayers for the second week running, adding: “The Pope rested well.”

Francis is likely to prepare a written homily for someone else to read at Sunday’s Angelus.

Millions of people around the world have been concerned about the Pope’s increasingly frail health – and his condition has given rise to speculation over a possible resignation, which the Vatican has not commented on.

Doctors on Friday said he was “not out of danger” and was expected to remain at Rome’s Gemelli hospital for at least another week.

Sergio Alfieri, the chief of the pontiff’s medical team, said: “Is he out of danger? No. But if the question is ‘is he in danger of death’, the answer is ‘no’.”

He said Francis was affected by seasonal flu before being taken to hospital and that, “due to his challenging duties”, he had suffered fatigue.

He is also fighting a multipronged infection of bacteria and viruses in the respiratory tract.

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The doctors warned that while he did not have sepsis – where germs enter the bloodstream – there was always a risk the infection could spread in his body, and they said that was the biggest concern.

Sepsis is a complication of an infection that can lead to organ failure and death.

Pope Francis has a history of respiratory illness, having lost part of one of his lungs to pleurisy as a young man. He had an acute case of pneumonia in 2023.

The release of more than 600 Palestinian prisoners planned for Saturday has been postponed “until the release of the next hostages is secured without humiliating ceremonies”, Israel has said.

In a statement early on Sunday, Prime Minister Benjamin Netanyahu‘s office accused the Palestinian militant group Hamas of “repeated violations” as it lashed out at “disgraceful ceremonies” during the handover of Israeli captives in Gaza.

The Israeli PM’s office said: “In light of the repeated and ongoing violations by Hamas – including the disgraceful ceremonies that dishonour the dignity of our abductees and the cynical use of captives for propaganda purposes – it has been decided to postpone the release of the terrorists that was planned for yesterday until the release of the next group of abductees is secured, and without the humiliating ceremonies.”

The statement came as vehicles apparently carrying prisoners left the open gates of Ofer prison in the occupied West Bank, only to turn around and go back in.

The release of 620 Palestinian prisoners had been delayed for several hours and was meant to happen after six Israeli hostages were released on Saturday.

Five of the six captives were escorted by masked, armed militants in front of crowds – displays that the United Nations and others have criticised as cruel after previous handovers.

The final hostage was released to the Red Cross in private.

The Gaza ceasefire deal continues to hold, despite tensions rising earlier in the week when Hamas initially handed over the body of an unidentified Palestinian woman instead of Israeli mother-of-two Shiri Bibas.

The hostage-prisoner exchange earmarked for Saturday was supposed to be the last for the first phase of the ceasefire.

Israel had been expected to free hundreds of Palestinian prisoners on Saturday, including a man who has been detained for more than 40 years, and many more given life sentences.

However, as night fell across the region, they remained behind bars, with Hamas claiming their release had been delayed because some of them had been “assaulted”.

An Israeli spokesperson has denied the assaults and said the Red Cross were present at the prison.

Follow latest: Delay to prisoner release due to ‘assaults’ – Hamas

Who are the freed Israeli hostages?

The first two hostages released on Saturday were Tal Shoham and Avera Mengistu.

Mr Shoham, 40, was visiting his wife’s family in Kibbutz Be’eri when Hamas militants stormed into the community during the October 7 attacks in 2023.

His wife, two young children and three other relatives were also abducted, but they were freed in an exchange in November 2023.

Mr Mengistu, a 39-year-old Ethiopian-Israeli, had been held in Gaza since he entered the territory on his own in 2014.

Watching the moment he was freed on TV, his family broke out in song as he walked free for the first time in more than a decade.

Later on Saturday, Eliya Cohen, Omer Shem Tov and Omer Wenkert were handed over to the Red Cross in Nuseirat, central Gaza.

Mr Shem Tov, 22, was taken during the October 7 attacks on the Nova music festival.

The computer programmer had shared his live location with his family, who eventually noticed he was headed towards Gaza and contact with him was lost.

Mr Cohen, 27, was also taken from the Nova festival, alongside his fiancee.

Released hostages have said that he was kept in chains and deprived of food and sunlight during his time in captivity, according to reports.

Mr Wenkert, 23, was taken from Nova. He suffers from colitis and requires special medical care, it has been reported.

Finally, Hisham al Sayed, 28, was handed over in a private ceremony.

The Bedouin-Israeli, from the village of Hura in the Negev desert, has been a captive since he crossed into Gaza in 2015.

Who were the Palestinian prisoners due to be released?

More than 600 Palestinian prisoners had been set to be released on Saturday.

According to the prisons office, which is run by Hamas, they included 50 who had been sentenced to life imprisonment, 60 described as having “high” sentences, 47 prisoners from the “Wafa al Ahrar” 2011 prisoner exchange deal who had since been re-arrested, and 445 who were arrested after 7 October attacks.

The “Wafa al-Ahrar” deal was the 2011 prisoner exchange agreement that saw the release of captured Israeli soldier Gilad Shalit in exchange for 1027 Palestinian prisoners.

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Among the most high-profile Palestinians who had been set to be released was Nael Barghouti – the longest-serving prisoner, who has been inside for 43 years.

Also on the list were several journalists, many of whom covered events at al Shifa hospital, and Yousef al Mansi, a Palestinian minister in Gaza.

It had been expected that Dr Hussam Abu Safiya, the director of Kamal Adwan Hospital in Gaza, would be among those being released on Saturday.

However it later emerged that he was not on the list of those set to be freed.

Pope Francis is in a critical condition after a “prolonged respiratory crisis” that required a high-flow of oxygen and is “suffering more than yesterday”, the Vatican has said.

The 88-year-old has been in hospital for more than a week being treated for double pneumonia and chronic bronchitis.

In an update on Saturday evening, the Vatican said “the Holy Father’s condition continues to be critical”, adding that this morning he “presented with a prolonged asthmatic respiratory crisis” which required the application of high-flow oxygen.

He also had blood transfusions after tests revealed thrombocytopenia, which is associated with anemia.

“The Holy Father continues to be vigilant and spent the day in an armchair even though he was suffering more than yesterday. At the moment the prognosis is reserved,” the Vatican’s statement said.

In an update earlier on Saturday morning – the shortest since Francis was admitted to hospital on 14 February – the Vatican said he will not lead Sunday prayers for the second week running, adding: “The Pope rested well.”

Francis is likely to prepare a written homily for someone else to read at Sunday’s Angelus.

Millions of people around the world have been concerned about the Pope’s increasingly frail health – and his condition has given rise to speculation over a possible resignation, which the Vatican has not commented on.

Doctors on Friday said he was “not out of danger” and was expected to remain at Rome’s Gemelli hospital for at least another week.

Sergio Alfieri, the chief of the pontiff’s medical team, said: “Is he out of danger? No. But if the question is ‘is he in danger of death’, the answer is ‘no’.”

He said Francis was affected by seasonal flu before being taken to hospital and that, “due to his challenging duties”, he had suffered fatigue.

He is also fighting a multipronged infection of bacteria and viruses in the respiratory tract.

Read more from Sky News:
Trump says US close to Ukraine minerals deal
Body of Israeli hostage Shiri Bibas returned

The doctors warned that while he did not have sepsis – where germs enter the bloodstream – there was always a risk the infection could spread in his body, and they said that was the biggest concern.

Sepsis is a complication of an infection that can lead to organ failure and death.

Pope Francis has a history of respiratory illness, having lost part of one of his lungs to pleurisy as a young man. He had an acute case of pneumonia in 2023.