He then shot dead a three-year-old girl, now named as Sophie Martyn, and her 43-year-old father, Lee Martyn.
The gunman shot at two residents – a man aged 33 and a 53-year-old woman – who both received significant injuries that are not currently believed to be life-threatening.
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Davison continued his shooting spree by entering a nearby park, where he killed Stephen Washington, aged 59, before shooting Kate Shepherd, aged 66, on Henderson Place. Ms Shepherd later died in Derriford Hospital.
After the rampage, Davison turned the gun on himself, police have said.
He was reported dead at 6.23pm, just minutes after police were alerted at 6.11pm.
All of those killed lived locally in the Keyham area.
The firearm he used was legally held.
Prime Minister Boris Johnson said the issue of how the Plymouth attacker came to legally own a gun should be “properly investigated” as he described the shooting as an “absolutely appalling” incident.
Prince Andrew has announced he is to give up his titles, including the Duke of York.
However, he will remain a prince, having been born the son of Elizabeth II.
His former wife, Sarah Ferguson, will also no longer use her title of The Duchess of York, it is understood.
In a statement, Prince Andrew said: “In discussion with The King, and my immediate and wider family, we have concluded the continued accusations about me distract from the work of His Majesty and the Royal Family.
“I have decided, as I always have, to put my duty to my family and country first. I stand by my decision five years ago to stand back from public life.
“With His Majesty’s agreement, we feel I must now go a step further. I will therefore no longer use my title or the honours which have been conferred upon me.
“As I have said previously, I vigorously deny the accusations against me.”
The decision comes following increased pressure on Prince Andrew after more reports emerged of his relationship with paedophile financier Jeffrey Epstein, and his relationship with an alleged Chinese spy.
This breaking news story is being updated and more details will be published shortly.
The Home Office appealed after a court granted the group’s co-founder a judicial review and said the ban disproportionately interfered with freedom of speech and assembly.
Image: A woman is led away by police during Palestine Action protest on 6 September. Pic: PA
It said the government should also have consulted the group first.
The judicial review of the banwas scheduledto begin on 25 November and Friday’s Court of Appeal decision means it can still go ahead.
Palestine Action called it a “landmark victory” and said co-founder Huda Ammori had also been granted permission to appeal on two further grounds.
Reacting after the court’s decision, Ms Ammori called the ban “absurdly authoritarian” and “one of the most extreme attacks on civil liberties in recent British history”.
She said 2,000 people had been arrested since it was outlawed and arresting “peaceful protesters” under the Terrorism Act was a misuse of resources.
The group’s vandalising of aircraft at Brize Norton in June – with two activists reportedly entering on electric scooters – prompted a security review of UK defence sites.
Multiple rallies for the group have taken place in London since July’s ban, with hundreds detained for showing support.
A protest at the start of this month saw another 492 people arrested despite calls for the event to be scrapped after the Manchester synagogue terror attack.
The King will become the first British monarch to pray publicly with the Pope since the Reformation 500 years ago during a state visit to the Holy See next week.
The King and Queen will meet the new pontiff Pope Leo XIV at the Apostolic Palace, his official residence, next Thursday during their trip to Vatican City.
In a highly significant moment in relations between the Catholic Church and Church of England, of which His Majesty is Supreme Governor, the King and Queen and the Pope will attend a special ecumenical service in the Sistine Chapel celebrating the ongoing work towards unity and cooperation among different Christian churches.
The decision for the King and Pope to pray together during the service will be the first time a monarch and the pontiff have joined together in this type of moment of reflection in the 500 years since the Reformation when, in 1534, King Henry VIII declared himself as head of the Church of England and broke from the papal authority of the Rome Catholic Church.
In another historic step, the King will be made “Royal Confrater” of the Abbey of St Paul’s Outside the Walls.
The abbot of the community and the archpriest of the basilica wished to confer the title and received the Pope’s approval to do so. To mark the occasion a special seat has been made decorated with the King’s coat of arms.
The King will use it during the service, after which it will remain in the apse of the basilica for future use by His Majesty and his heirs and successors.
English Kings had a particular link with The Papal Basilica of St Paul’s Outside the Walls until the Reformation. It is also known as the Papal Basilica where reconciliation, ecumenism and relationships across the Christian faith are celebrated.
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King to pray with Pope
A spokesperson for the Church of England said: “The royal confrater title, whilst it confers no duties or obligations on the King, and makes no changes whatsoever to the formal, constitutional and ecclesiastical position of His Majesty as the Supreme Governor of the Church of England, it is a tribute to his majesty and his own work over many decades to find common ground between faiths and to bring people together.”
The trip comes during the Catholic Church’s 2025 Jubilee year. Held traditionally every 25 years, “Pilgrims of Hope” is the theme of this jubilee.
Image: The King and Queen met the late Pope Francis in April. Pic: Reuters
The visit will also reflect the joint commitment from both Pope Leo and the King to protect nature and their shared concern for the environment. The service at the Sistine Chapel will have the theme of “Care for Creation” and they will attend a meeting on sustainability.
A spokesperson from the Foreign Office said: “At a time of growing instability and conflict, the UK’s relationship with the Holy See is more important than ever. The Holy See is a key international actor.
“We work with the Holy See to promote human dignity, to promote peace and combat climate change… so His Majesty’s visit will strengthen the UK’s relationship with this crucial and influential global partner.”
Only in 1961 did Queen Elizabeth II became the first British monarch since the Reformation to make an official visit to the Holy See.
In April of this year, a royal visit had to be cancelled due to the ill health of Pope Francis, but both the King and Queen did meet him privately while on a trip to Rome. It is understood Pope Leo and the King have been actively engaged in how this reorganised visit will look and the themes it will cover.