A 13-year-old boy arrested on suspicion of murder after a woman was stabbed in the street has been released with no further action.
The victim, 25, was attacked at 20:30 GMT on Saturday in Wellingborough Road, Northamptonshire and died at the scene.
A man, 27, was also arrested on suspicion of murder.
Police said he had suffered serious injuries and another 27-year-old man was arrested on suspicion of his attempted murder.
Det Insp Pete Long, said: “This was an extremely tragic incident in which a young woman has lost her life and I want to reassure people that we are doing all we can to bring those responsible to justice.”