How day of unimaginable tragedy unfolded on the streets of Southport: Masked killer prowled houses before ambushing Taylor Swift-themed dance class where he murdered children in 20-minute reign of ter

A horrific knife attack at a Taylor Swift-themed dance workshop where a masked killer stabbed three children to death unfolded in just 20 minutes - in a bloodbath that unleashed terror onto the streets of Southport. Forensic officers on Hart Street in Southport, Merseyside, following the shocking knife rampage Police screens up at the scene of the tragic stabbing incident in Hart Street in Southport The attack happened at a Taylor Swift themed yoga and dance workshop Emergency crews and forensic teams descended on the scene after 13 people were stabbed An aerial view of Hart Street, where a horrifying knife attack took place just before midday The attack happened at a Taylor Swift-themed workshop on Hart Street in Southport. Flowers and a stuffed animal are seen behind the police cordon The community has been rocked by the rampage which left two children dead and nine others injured A police officer receives flowers from local residents to put them behind the police cordon near the scene of a stabbing incident Police and forensic officers attend the scene of a multiple stabbing attack North-West Ambulance Service Cheshire and Merseyside head of service Dave Kitchin told the press conference that the knife attack will leave a 'lasting impact on the whole community'. Police on Hart Street Southport, Merseyside, where a man has been detained Emergency services and forensics officers pictured at the scene on Monday morning Emergency services and forensics officers pictured at the scene on Monday morning Merseyside Police update in full Merseyside Police Chief Constable Serena Kennedy said on Monday evening: 'It is with great sadness that today I am here to advise that two young children have died as a result of injuries sustained in a knife attack this morning. Firefighters were North West Ambulance Service sent 13 ambulances, specialised resources of its Hazardous Area Response Team, Air Ambulance and Merit Doctors to the scene Armed police officers detained a man and seized a knife after the attack that left multiple people wounded in Southport, Merseyside Multiple people 'including children' were stabbed after a man went on a knifing spree Dozens of police cars, vans, fire engines and ambulances are also assembled a short distance away at a local school.