British police said Sunday they were keeping an open mind about what prompted a lone suspect to stab three people to death in a park filled with families and friends relaxing in the southern English city of Reading.
The Thames Valley police said three people were also seriously injured and a 25-year-old suspect from the historic town 60 kilometres (35 miles) west of London detained.
They made no reference to reports that the man was a Libyan national.
Footage showed what appeared to be a large number of counter-terror police performing a controlled explosion at a residence where the suspect is believed to have lived.
"Officers are keeping an open mind as to the motivation for the incident and are being supported by colleagues from Counter Terrorism Policing South East," the police said after launching a murder investigation.
"We are not looking for any other people in connection with this incident."
Prime Minister Boris Johnson condemned the "appalling incident" and top politicians expressed sympathies for those hurt at Forbury Gardens -- a popular park situated next to the ruins of the 12th-century Reading Abbey.
Home Secretary Priti Patel called it "a senseless attack on people enjoying a Saturday evening with friends".
A Black Lives Matter protest took place at the park earlier but police said there was no indication the two were linked.
"In terms of the protest and the people who attended from Black Lives Matter, we're all safe," the Reading BLM event organiser Nieema Hassan said on Facebook.
"None of us are affected. We had all left by the time this happened."
British police said Sunday they were keeping an open mind about what prompted a lone suspect to stab three people to death in a park filled with families and friends relaxing in the southern English city of Reading.
The Thames Valley police said three people were also seriously injured and a 25-year-old suspect from the historic town 60 kilometres (35 miles) west of London detained.
They made no reference to reports that the man was a Libyan national.
Footage showed what appeared to be a large number of counter-terror police performing a controlled explosion at a residence where the suspect is believed to have lived.
"Officers are keeping an open mind as to the motivation for the incident and are being supported by colleagues from Counter Terrorism Policing South East," the police said after launching a murder investigation.
"We are not looking for any other people in connection with this incident."
Prime Minister Boris Johnson condemned the "appalling incident" and top politicians expressed sympathies for those hurt at Forbury Gardens -- a popular park situated next to the ruins of the 12th-century Reading Abbey.
Home Secretary Priti Patel called it "a senseless attack on people enjoying a Saturday evening with friends".
A Black Lives Matter protest took place at the park earlier but police said there was no indication the two were linked.
"In terms of the protest and the people who attended from Black Lives Matter, we're all safe," the Reading BLM event organiser Nieema Hassan said on Facebook.
"None of us are affected. We had all left by the time this happened."