A 16-year-old boy has been arrested on suspicion of the murder of a 17-year-old boy stabbed to death in Brighton.
Police were called to Queens Road in the East Sussex city around 5pm on Thursday evening to reports of a stabbing.
Mustafa Momand was taken to hospital, where he was pronounced dead.
Following an “extensive search”, a 16-year-old boy was arrested on suspicion of the murder and remains in custody for questioning, Sussex Police said.
Police are appealing for witnesses to come forward.
Mr Momand’s next of kin have been informed and are being supported by specialist officers.
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Image: Police and forensic investigators at the scene in Brighton
Detective Superintendent Andy Wolstenholme, of the Surrey & Sussex major crime team, said: “This is a tragic incident in which a young man has lost his life and we understand the community will be shocked and alarmed.
“A suspect is in custody and a fast-moving investigation is under way to establish exactly what happened and why. While we do so, there will be an increased police presence in the area for some time.
“This incident took place in the centre of the city at a peak time.
“Officers have already spoken with many witnesses, but we would like to hear from anyone who witnessed the incident, or saw a man dressed in black leaving the area who hasn’t yet provided details to the police.
“Similarly, we are asking anyone who has relevant information or video footage – for example from a dashcam or their mobile phone – to get in touch.”