It happened on the A1 near Dunbar.
Police Try To ID Man Found Seriously Injured
A man is in hospital with serious head injuries following an alleged assault.
Police were called to New Row in Dunfermline, Fife, at around 1.50am on Sunday.
A man, thought to be around 30, was found to have sustained serious head injuries and was taken to Victoria Hospital in Kirkcaldy.
A man has been detained in connection with the incident.
Officers are currently working to identify the injured man and are appealing for anyone who recognises his description to come forward.
He is described as being around 6ft, with a slim build and short brown hair.
He was wearing dark blue denim Voi jeans with a New York design belt and a white T-shirt. On his right arm is a black tribal-design tattoo that starts at the top outer of his arm and reaches down to just above his elbow.
Detective Inspector Chris Mill said: "At this time a man is detained in connection with this incident, however we'd urge any further witnesses to get in touch.''
Anyone with information can contact Police Scotland on 101 or Crimestoppers on 0800 555 111.
The 26 year old was first targeted in Briarscroft Road.
Euan Johnston was shot in his car last month.
The family of three crash victims took their case for the 59-year-old to be put on trial to the Appeal Court in Edinburgh earlier this year.
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