The man arrested on suspicion of stabbing three people to death became known to MI5 when he turned up at the security service headquarters and demanded to be let in.
The Sun reports that the 31-year-old suspect was “moved on” and his name taken down following the strange incident which took place in late August 2022 outside the fortified Thames House building.
A security source told the paper: “He turned up one day and literally started banging on the door. He was moved on and logged.
“This happens from time to time.”
The man’s name then reportedly came up when security service personnel were searching for more information following his alleged violent stabbing attack on Tuesday morning.
Nottinghamshire Police announced that they had arrested the man on Tuesday morning on suspicion of murder. CCTV footage captured the moment he was tasered by police and taken into custody.
Read more: Nottingham attack broadcast interrupted by ‘vile’ woman jumping in front of camera
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 history of mental health issues.
CCTV from a residential care home 100 yards from where victim Ian Coates was found, appearing to show a man dressed in black attempting to gain access to a bay window, is being examined by detectives. The footage shows someone inside the building managing to bat the man away before closing the window.
Nottinghamshire Police said the force was not contacted about the attempted break-in and had no calls about the suspect before the first stabbing. Investigators are continuing to work with counter-terrorism police and maintain an open mind about the motive for the attack.
A large vigil for the took place on Wednesday at the University of Nottingham campus, with relatives of student victims Grace O’Malley-Kumar and Barnaby Webber seen embracing and remembering their loved ones.
Barnaby’s father David told those gathered that “his heart will be with you guys forever” while Grace’s father Sanjoy told the students to look after each other. Nottingham City Council announced that another vigil will be held in the Old Market Square on Thursday from 5.30pm, with a minute’s silence at 6pm from the steps of the Council House.
Speaking on Wednesday with David Webber’s hand on his shoulder, Mr Kumar said: “Everyone here I really, really want to thank you for your support, for taking the time to be here. All of you guys, everywhere that I see, a sea of people, such a lovely sign of the university and the bond you have.
“Grace was also like Barney, she loved coming up to Nottingham. In fact, we couldn’t get her down. I said to her last week, ‘come down’, she said ‘well, after she’s had a few more sessions’. I used to call them her crisis meetings.
“The love that we have out here, I just wish we had it everywhere. So, look after each other is the big thing. Look after your friends and look after people around you. It is so important.”