A stabbing attack in a park in south-east England, in which three people were killed, was described on Sunday by police as an act of terrorism.
The authorities initially said the attack was not being treated as terrorism but later changed their opinion.
Thames Valley Police said they launched a murder investigation.
They said they arrested a man, 25, at the scene and were not pursuing any other suspects.
The arrested man was a Libyan citizen identified by British media as Khairi Saadallah.
"This was an atrocity," said Neil Basu, Britain's most senior counter-terrorism police officer.
"From our inquiries undertaken so far, officers have found nothing to suggest that there were any other people involved in the attack, and we are not looking for anyone else in relation to this incident."
Only one of the three victims, teacher James Furlong, has so far been publicly identified.
Two colleagues, Anne Kennedy and Katie Pearce, said Mr Furlong "truly inspired everyone he taught through his passion for his subject and his dedication".
The violence began about 7pm local time as families and groups were in the Forbury Gardens park in Reading, a town of about 200,000 residents, 65 kilometres west of London.
Personal trainer Lawrence Wort said the park was full of groups socialising on the grass when “one lone person walked through, suddenly shouted some unintelligible words and went around a large group of around 10 trying to stab them”.
“He stabbed three of them in the neck and under the arms, and then turned and started running towards me, and we turned and started running,” Mr Wort said.
“When he realised that he couldn’t catch us, he tried to stab another group.
"He got one person in the back of the neck and then when he realised everyone was starting to run, he ran out the park.”
Witnesses said police cars and helicopters descended on the park after the attack as police blocked off roads in the city centre and two air ambulances were called to treat the wounded.
"A number of people were injured and taken to hospital," police said.
"Tragically, three of these people died and another three sustained serious injuries."
The Royal Berkshire Hospital in Reading said it was treating two casualties from the incident.
Airline worker Carlos Garcia Pascual was walking to his home near Forbury Gardens when emergency vehicles and police officers arrived.
Mr Pascual said it was chaos as police yelled at people to leave the area.
“We didn’t know if it was a situation like happened in London a few years ago, where the attackers were on the loose,” he said.
“Forbury Gardens is a peaceful place. A lot of families go there with their kids to play, picnics.
"To realise that happened in Forbury Gardens is really hard to believe.”
Prime Minister Boris Johnson tweeted that he was "appalled and sickened" by the attack.
Police said they did not think the attack was linked to a Black Lives Matter demonstration in the park hours before the incident.
Nieema Hassan, one of the organisers of Saturday’s protest, said demonstrators had left by the time the violence occurred.
In a social media post, she said she was “praying for the people who are affected. I hope they’re OK”.
Britain’s official terrorism threat level stands at “substantial", the middle level on a five-rung scale, meaning an attack is likely.
It stood a notch higher at “severe” for several years.
Britain has been hit by violent attacks in recent years, including a suicide bombing at an Ariana Grande concert in Manchester in 2017, which killed 22 people, and two deadly vehicle and knife attacks in London the same year.
– Additional reporting by AP
LOS ANGELES GALAXY 2 MANCHESTER UNITED 5
Galaxy: Dos Santos (79', 88')
United: Rashford (2', 20'), Fellaini (26'), Mkhitaryan (67'), Martial (72')
Farage on Muslim Brotherhood
Nigel Farage told Reform's annual conference that the party will proscribe the Muslim Brotherhood if he becomes Prime Minister.
"We will stop dangerous organisations with links to terrorism operating in our country," he said. "Quite why we've been so gutless about this – both Labour and Conservative – I don't know.
“All across the Middle East, countries have banned and proscribed the Muslim Brotherhood as a dangerous organisation. We will do the very same.”
It is 10 years since a ground-breaking report into the Muslim Brotherhood by Sir John Jenkins.
Among the former diplomat's findings was an assessment that “the use of extreme violence in the pursuit of the perfect Islamic society” has “never been institutionally disowned” by the movement.
The prime minister at the time, David Cameron, who commissioned the report, said membership or association with the Muslim Brotherhood was a "possible indicator of extremism" but it would not be banned.
UAE currency: the story behind the money in your pockets
UAE Premiership
Results
Dubai Exiles 24-28 Jebel Ali Dragons
Abu Dhabi Harlequins 43-27 Dubai Hurricanes
Fixture
Friday, March 29, Abu Dhabi Harlequins v Jebel Ali Dragons, The Sevens, Dubai
The specs
Engine: 2.0-litre 4cyl turbo
Power: 261hp at 5,500rpm
Torque: 405Nm at 1,750-3,500rpm
Transmission: 9-speed auto
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WandaVision
Starring: Elizabeth Olsen, Paul Bettany
Directed by: Matt Shakman
Rating: Four stars
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Mohammed bin Zayed Majlis
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List of officials:
Referees: Chris Broad, David Boon, Jeff Crowe, Andy Pycroft, Ranjan Madugalle and Richie Richardson.
Umpires: Aleem Dar, Kumara Dharmasena, Marais Erasmus, Chris Gaffaney, Ian Gould, Richard Illingworth, Richard Kettleborough, Nigel Llong, Bruce Oxenford, Ruchira Palliyaguruge, Sundaram Ravi, Paul Reiffel, Rod Tucker, Michael Gough, Joel Wilson and Paul Wilson.
Teaching in coronavirus times
Killing of Qassem Suleimani
Under 19 World Cup
Group A: India, Japan, New Zealand, Sri Lanka
Group B: Australia, England, Nigeria, West Indies
Group C: Bangladesh, Pakistan, Scotland, Zimbabwe
Group D: Afghanistan, Canada, South Africa, UAE
UAE fixtures
Saturday, January 18, v Canada
Wednesday, January 22, v Afghanistan
Saturday, January 25, v South Africa
Aston martin DBX specs
Engine: 4.0-litre twin-turbo V8
Transmission: nine-speed automatic
Power: 542bhp
Torque: 700Nm
Top speed: 291kph
Price: Dh848,000
On sale: Q2, 2020
Mohammed bin Zayed Majlis
Mohammed bin Zayed Majlis
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Aldar Properties Abu Dhabi T10
*November 15 to November 24
*Venue: Zayed Cricket Stadium, Abu Dhabi
*Tickets: Start at Dh10, from ttensports.com
*TV: Ten Sports
*Streaming: Jio Live
*2017 winners: Kerala Kings
*2018 winners: Northern Warriors
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Men’s singles
Group A: Son Wan-ho (Kor), Lee Chong Wei (Mas), Ng Long Angus (HK), Chen Long (Chn)
Group B: Kidambi Srikanth (Ind), Shi Yugi (Chn), Chou Tien Chen (Tpe), Viktor Axelsen (Den)
Women’s Singles
Group A: Akane Yamaguchi (Jpn), Pusarla Sindhu (Ind), Sayaka Sato (Jpn), He Bingjiao (Chn)
Group B: Tai Tzu Ying (Tpe), Sung Hi-hyun (Kor), Ratchanok Intanon (Tha), Chen Yufei (Chn)
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The five pillars of Islam
Global Fungi Facts
• Scientists estimate there could be as many as 3 million fungal species globally
• Only about 160,000 have been officially described leaving around 90% undiscovered
• Fungi account for roughly 90% of Earth's unknown biodiversity
• Forest fungi help tackle climate change, absorbing up to 36% of global fossil fuel emissions annually and storing around 5 billion tonnes of carbon in the planet's topsoil
The five pillars of Islam
BMW M5 specs
Engine: 4.4-litre twin-turbo V-8 petrol enging with additional electric motor
Power: 727hp
Torque: 1,000Nm
Transmission: 8-speed auto
Fuel consumption: 10.6L/100km
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Personalities on the Plate: The Lives and Minds of Animals We Eat
Barbara J King, University of Chicago Press
Key developments in maritime dispute
2000: Israel withdraws from Lebanon after nearly 30 years without an officially demarcated border. The UN establishes the Blue Line to act as the frontier.
2007: Lebanon and Cyprus define their respective exclusive economic zones to facilitate oil and gas exploration. Israel uses this to define its EEZ with Cyprus
2011: Lebanon disputes Israeli-proposed line and submits documents to UN showing different EEZ. Cyprus offers to mediate without much progress.
2018: Lebanon signs first offshore oil and gas licencing deal with consortium of France’s Total, Italy’s Eni and Russia’s Novatek.
2018-2019: US seeks to mediate between Israel and Lebanon to prevent clashes over oil and gas resources.
KILLING OF QASSEM SULEIMANI