Two more people have been arrested over the murder of a man with learning difficulties in a London street attack earlier this month.
Dean Mayley, 24, – who had a mental age of nine – was knifed to death in Greenford, London, after stepping off a bus.
In a new development, a 17-year-old and an 18-year-old man handed themselves in to police and were arrested on suspicion of murder. This comes a day after two other teenage suspects, both aged 17, had been charged with murder.
Mayley died of a single stab wound to the chest hours after being rushed to St Mary's Hospital for treatment.
Speaking after his death, Mayley's grieving family said he rarely left the house due to his condition and enjoyed a close bond with his seven-year-old nephew, with the pair described as "inseparable".
Leading the investigation, Det Chief Insp Matt Bonner said: "This was a vulnerable man who would have shown an unusual degree of trust in those he came across and it is utterly sickening he should have been set upon in this way."
Mother Donna Mayley said his family were struggling to comprehend his death: "We want to understand what happened to him."