The third victim of the Nottingham attack has been named as Ian Coates by his employer, the L.E.A.D. Academy Trust, which said he was a "beloved and respected member of the Huntingdon Academy staff".
In a statement Ross Middleton, executive headteacher at Huntingdon Academy and Warren Academy, said: "Ian was a much-loved colleague who always went the extra mile for the benefit of our children and will be greatly missed. As a school community, it will take time to process this deeply upsetting news. We wish to extend our sympathy and condolences to all those affected by yesterday's tragic events."
Diana Owen, chief executive of the L.E.A.D. Academy Trust, said: "I am deeply shocked and saddened to hear about this tragic news. Ian was a beloved and respected member of the Huntingdon Academy staff. My thoughts are with his family and friends during this extremely sad time."
Two talented sportspeople from the University of Nottingham, Barnaby Webber and Grace Kumar, were also killed in the attacks in the early hours of Tuesday morning. Nottinghamshire Police said a 31-year-old man was tasered and arrested on suspicion of murder after the pair were stabbed to death in Ilkeston Road at about 4am on Tuesday.
Mr Coates was then found fatally knifed in Magdala Road before the suspect is believed to have stolen his van and driven at pedestrians in Milton Street. Three people were injured in the van attack, with one in a critical condition in hospital and two suffering minor injuries.
According to reports, the suspect was a west African migrant who had settled in the UK legally and was known to police. It is understood the man has a mental health history.
Barnaby Webber, 19, was a keen cricketer whose family home was in Taunton in Somerset. He was a former pupil of Taunton School, which he attended for his entire school career from nursery to sixth form, with a fellow ex-student describing him as a "wonderful young man with much to look forward to".
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Mr Webber played for cricket teams including Bishops Hull Cricket Club, where members called him a dear friend who was a key part of the club. He had a younger brother, Charlie, who along with his parents, David and Emma, described their "complete devastation" at his death.
Fellow student Grace Kumar, also 19, was a talented hockey player who played for the England under-16 and under-18 squads, as well as teams including Southgate Hockey Club in north London. She was also a gifted cricketer, with Woodford Wells Cricket Club, in Essex. The club called the teenager "fun, friendly and brilliant".
Miss Kumar, also known as Grace O'Malley-Kumar, attended independent Bancroft's School in north-east London before the University of Nottingham. According to reports, her father is thought to be Dr Sanjoy Kumar, a GP who saved three teenage victims of a knife attack in 2009.
If police wish to hold the suspect in custody beyond Wednesday evening without charge they will need to apply to magistrates for permission. Nottinghamshire Police’s chief constable Kate Meynell told reporters the force was not looking for anyone else in connection with the incidents and no further arrests had been made. The police chief said the motive behind the attack was yet to be determined, but officers were keeping an “open mind” and working with counter-terror police.