Two men have been arrested on suspicion of murdering a 20-year-old university student.
Luke Desmond Campbell, known as Luka to friends, was found stabbed to death in the yard of a semi-detached house in the Boscombe area of Bournemouth, Dorset, after 10am on Saturday.
Two men, aged 20 and 21, were arrested on suspicion of murder by officers in London on Wednesday afternoon and were being taken to Bournemouth for questioning.
Detectives are pursuing several lines of inquiry and said the murder was an isolated incident.
Mr Campbell, from St John's Road in Boscombe, was in the first year of a BSc (Hons) degree in software systems at Bournemouth University.
A post-mortem examination found he died of a stab wound to the chest.
Detective Chief Inspector Neil Redstone, of Dorset Police, said: "This is a very detailed investigation and we are following several lines of specific inquiry. We are keeping an open mind as to the motive for Luke's murder."
The garden where his body was found, at the junction of St Clement's Road and Cleveland Road, backs on to the main London to Bournemouth railway line.
It is a communal garden which belongs to a semi-detached house which has been converted into several flats.
Officers were alerted to the murder by a man who saw the body while walking across the bridge which spans the railway line.
