Two men were badly hurt when they were attacked by a gang in Luton Road, Dunstable on Friday night.
The assault took place at about 10pm, with a 35-year-old man knocked unconscious and the other victim, a 25-year-old man suffering serious injuries.
He was taken to the Luton and Dunstable Hospital for treatment.
Officers are now investigating. Call Bedfordshire Police on 101, or text information to 07786 200011. Or Crimestoppers, anonymously, on 0800 555111.