A neighbour of the Russell Square stabbing suspect has described him as a "good boy" who was "not radicalised in any way".
Parmit Singh Bhamra told ITV News the 19-year-old, who has been arrested on suspicion of murder, was "academic" and "on the ball".
He said: "He was a good boy, he listened to his mum, he listened to his sister. He used to help out with the shopping, help out bringing things in and out of the house. I don't have anything bad to say about him."
He added that the man was "not fanatic" about Islam, saying: "I guarantee you he was not connected to ISIS in any way."
Police have said there is no evidence the suspect was radicalised and do not believe he was "in any way motivated by terrorism".
Darlene Horton, 64, was the wife of a university professor from Florida who was hours away from flying home when she was attacked.
The 19-year-old was Tasered by armed police before being arrested on suspicion of murdering a woman and injuring five others.
Police have ruled out terrorism as a motive for the stabbing attack in London's Russell Square.