Two children have been killed and nine more injured critically, in a knife attack at a dance class in northern England yesterday
A 17-year-old male has been arrested on suspicion of murder and attempted murder over the attack in Southport, near Liverpool in northwest England, which also left two adults with critical injuries.
Police chief Serena Kennedy said counter-terror police had offered their support, but that the attack was not being treated as terror-related, and that the motivation was unclear.
Police were called to a property that was hosting a Taylor Swift-themed dance class for young children shortly before midday.
The suspect walked in from the street and started to attack the children, while adults in the room tried to protect them.