Three men have been bailed by police investigating the death of a man fatally wounded at his Berkshire home.
Opinderpal Singh Randhawa died from a single puncture wound to his stomach, post-mortem tests have found.
The 23-year-old was found by police and paramedics in Elliman Avenue, Slough, at about 1830 GMT on Tuesday, but died an hour later at Wexham Park Hospital.
Two men aged 30 and another aged 26, all arrested on suspicion of murder, were bailed until 7 January.
All three are believed to have known the victim, police said.
A fourth man, 23, was released without charge.
Det Supt Rob Mason, who is leading the murder investigation, said house-to-house inquiries have been conducted in the area.
Detectives from Thames Valley Police's major crime unit have appealed for witnesses to come forward.