LONDON (AFP): British police said Sunday (June 21) they were treating a stabbing spree in which a lone assailant killed three people in a park filled with families and friends in the southern English city of Reading as a "terrorism incident".
The Thames Valley police said three people were also seriously injured and a 25-year-old resident of the historic town 60km west of London was detained.
Local and counter-terror police made no reference to reports that the man was a Libyan refugee who has been granted asylum in Britain.
Footage showed what appeared to be a large number of counter-terror police performing a controlled explosion at the suspect's presumed residence shortly after the Saturday (June 20) evening attack.
"This morning, I can formally confirm that this has been declared a terrorist incident," counter-terror police chief Neil Basu said.
"Although the motivation for this heinous act is far from certain, Counter Terrorism Policing South East has taken on responsibility for leading this investigation."
Prime Minister Boris Johnson said he was "appalled and sickened" by the bloodshed at Forbury Gardens - a picturesque park situated next to the ruins of the 12th-century Reading Abbey.
"If there are lessons that we need to learn about how we handle such cases, about how we handle events leading up to such cases, then we will learn those lessons, and we will not hesitate to take action when necessary," Johnson said in televised comments.
"A Black Lives Matter" protest took place at the park earlier but police said there was no indication the two were linked.
"None of us are affected," the Reading BLM event organiser Nieema Hassan said on Facebook.
"We had all left by the time this happened."
Britain's terror alert level was kept at "substantial" - the third-highest on a five point scale.
"There is no specific intelligence to suggest anyone else attending crowded places is at risk," the counter-terror police chief said.
Witnesses reported seeing two air ambulances and several police cars rush to the park on Saturday evening.
One witness described a lone assailant walking through a park filled with people relaxing on the grass and stabbing them at random.
"The park was pretty full. A lot of people sat around drinking with friends," Lawrence Wort told the Press Association.
"One lone person walked though, suddenly shouted some unintelligible words and went around a large group of around 10, trying to stab them."
Wort said he saw three people being stabbed "in the neck and under the arms".
The assailant then lunged at another group and "got one person in the back of the neck", Wort said.
Another witness told The Sunday Mirror that one group of people who were attacked were "just in a circle chatting".
The assailant "was tapping them on the head. Then I thought someone had been sick. But it was blood spraying out", said the witness.
Paramedic teams were seen trying to resuscitate the injured as they lay unresponsive on the ground.
Officials said two people were being treated in the emergency department of Reading's Berkshire Hospital.
"An horrific, dreadful incident," policing minister Kit Malthouse tweeted.
The main opposition Labour party's leader Keir Starmer said Britons were "united in their grief".
"This is not a time for party politics," the opposition leader said.
Britain has witnessed two terror-related attacks in the past year.
A convicted jihadist who was out on parole after serving a sentence for terror offences was shot dead by police after stabbing five people - two fatally - by London Bridge in the heart of the British capital in November.
Police killed another assailant who injured three people in a London stabbing attack in February.
An overwhelming majority of Britain's serious crimes are committed with knives and other stabbing weapons because of very strict gun ownership laws.
Johnson's Conservative government promised to toughen up penalties for terror-related crimes after winning a sweeping mandate in a December general election. - AFP
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