A stabbing in which three people were killed in England has been declared a terrorist incident.
Police were called to a park in the town of Reading at about 7.00pm on Saturday, following reports that a number of people had been stabbed.
Several people who were injured were taken to hospital.
Three of these people died, and another three sustained serious injuries.
A 25-year-old man was detained at the scene and has been arrested on suspicion of murder.
He remains in police custody.
British police at a gateway of Forbury Gardens in the town of Reading, following a multiple stabbing attack. Picture by: Jonathan Brady/PA Wire/PA ImagesChief Constable John Campbell said: "I am deeply saddened by the events of last night.
"This was a truly tragic incident and the thoughts of Thames Valley Police are with all those who have been affected.
"Incidents of this nature are very rare, though I know that will be of little comfort to those involved and understand the concern that this incident will have caused amongst our local community.
"We will be working closely with our partners over the coming days and weeks to support the Reading community during this time".
Police said they are aware that the incident was captured on mobile phones, and want to hear from anyone who has video footage.
People have asked people not to circulate this footage on social media, out of respect for the deceased and injured.
