A woman fatally shot outside a bar in Sheffield in the early hours of Bank Holiday Monday was an "innocent bystander", police have said.
Officers were called to the scene at 2.45am following reports of a shooting outside the One Four One bar on West Street.
South Yorkshire Police officers attended the scene, where the 30-year-old woman was found with serious injuries.
She was taken to hospital where she later died.
Two men and a woman have been arrested on suspicion of murder following the shooting, and all three remain in police custody.
A 30-year-old man and a 32-year-old woman were detained near Stockport in Greater Manchester later that morning, while the second man, also 30, was arrested in Sheffield.
Chief Superintendent Jamie Henderson said a team of detectives is working to identify anyone else who may be involved, and to ensure those responsible are arrested.
Mr Henderson added: "Following extensive inquiries over the last 36 hours, we believe the victim was an innocent bystander who was on a night out in our city to celebrate the bank holiday weekend.
"Gun crime causes devastation within families and communities.
"In this case, an innocent woman who should have been able to safely enjoy a night out in Sheffield has been killed, and her loved ones have been left to face the heartbreaking reality that they will never see her again."
West Street is the hub of nightlife in the city, and is popular with students from the nearby University of Sheffield.
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South Yorkshire Police have released a CCTV image showing a white Audi that they believe was involved in the incident, and are appealing for anyone who was on West Street or Eldon Street in the early hours of Monday morning to come forward if they witnessed anything.
While formal identification has not yet taken place, the victim's next of kin have been informed and are being supported by specially trained officers, police said.
Mr Henderson called on members of the public to help, adding: "We know that West Street and Eldon Street were both busy at the time of this incident, and there were people who saw what happened who haven't come forward yet."
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