Three people have been arrested on suspicion of murdering schoolboy Alan Cartwright, who was stabbed to death while riding a bicycle with his friends.
An 18-year-old man was arrested in the early hours of this morning after attending a north London police station, Scotland Yard said.
A 17-year-old boy and a 21-year-old man were also arrested in Camden, north London, this morning and remain in custody.
The arrests follow an emotional appeal by Alan's family for witnesses to come forward to help track down the 15-year-old's killers.
Police released "shocking" footage of the moment the schoolboy was stabbed in the chest as he cycled with friends along a busy road in Islington, north London.
He managed to continue riding a short distance after the attack in Caledonian Road on Friday, but soon collapsed and was later pronounced dead at the scene.
A second suspect is shown lunging at one of the teenager's friends and knocking him off his bike, while a third crosses the road and grabs another friend to pull him off his bicycle.
A post-mortem examination found that Alan died from a single stab wound to the chest.
His mother and sister described the Army cadet and Celtic and Arsenal fan as a "joker" who loved bikes and never caused any trouble.
Fighting back tears during an appeal yesterday, Alan's mother, Michelle Watson, 39, said: "He always made you laugh about anything and everything. He was just the funny one out of his friends.
"I feel angry, I want somebody found for this. I just feel numb."
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules hereComments are closed on this article