A man was headbutted and punched in the face in an unprovoked assault in Corby.
The 24-year-old victim was walking near Tesco in Oakley Road when he was approached by a man on a bike who head-butted him and punched him in the face.
The offender is a white man, aged 30, with ginger hair and a ginger beard.
He wore a camouflage jacket with dark blue jeans and brown boots.
Police are appealing for witnesses to the assault which took place at about 10.15pm on Saturday, February 1.
Anyone with information about the assault can call Northamptonshire Police on 101 or information can be given anonymously to Crimestoppers on 0800 555111.