A man died in Tilehurst on Sunday after a stabbing which police have called a "targeted incident".
Pictures from the scene show multiple police cars in Romany Lane at around 10.40pm last night, with residents also reporting a police helicopter.
An 18-year-old man and two 19-year-old men, all from Reading, were arrested on suspicion of murder.
Read more: Man stabbed to death in Tilehurst
The victim's next of kin have been informed and are being supported by specially trained officers.
Senior Investigating Officer, Detective Chief Inspector Andy Howard, of the Major Crime Unit, said: “Our thoughts remain with his family and friends at this difficult time."
“We are currently in the early stages of this investigation and three people have been arrested on suspicion of murder.
He advised the public should expect an increased police presence in the area and asked anyone with information to call 101, quoting reference 43210492275.
People may also make reports anonymously via Crimestoppers on 0800 555 111.
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