Two more teenagers aged 17 and 19 have been arrested over the murder of man found lying in the street with stab wounds in the early hours of Wednesday morning.
Officers were called to the scene in Rodbourne, Swindon, following reports of an assault.
They found Charles Millar, 44, who was known as Roger, lying in the street and gave him first aid until an ambulance arrived.
Mr Millar, from East Street, Swindon, was taken to hospital, where he was pronounced dead shortly afterwards.
Two men, both aged 18, were arrested after being stopped by officers near the scene, a Wiltshire Police spokesman said. The pair remain in custody.