A 16-year-old boy has been arrested after another teenager, 17, was stabbed in front of shoppers in a Primark store in Nottingham city centre.
The victim suffered a stab wound to the chest after he was attacked inside the shop in Long Row at about 11.30am on Sunday.
He was taken to hospital with "serious injuries" but these are not believed to be life-threatening, police said.
A suspect fled the scene in the direction of Market Square after the attack.
A 16-year-old boy was arrested later on Sunday on suspicion of causing grevious bodily harm.
Officers believe there was an altercation outside the store between a group of young people before the attack and are appealing for witnesses.
Detective Inspector Paul Shortt, of Nottinghamshire Police, said: "This was a shocking incident that will have caused considerable alarm to anyone who witnessed it.
"A team of detectives has been working throughout the day to investigate this incident and we have now identified a suspect."
In an earlier statement, Detective Inspector Shortt said: "This was an appalling act of violence carried out in full view of members of the public.
"A team of detectives is now working to understand exactly what happened in the moments before, during and after this incident.
"To this end they want to hear from anyone who saw or heard any part of what happened.
"No matter how significant you think your information may be, we want to hear from you without delay."
A Primark spokesperson said the shop is closed until further notice after the stabbing.
"Our thoughts are with the victim and we are focused on supporting our colleagues who were in store at the time," a statement said.
"We are assisting the police with their investigation and are unable to comment further."
(c) Sky News 2025: Boy, 16, arrested after teenager stabbed in Nottingham city centre Primark
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