It happened on the A1 near Dunbar.
£10,000 Reward Offered In Murder Inquiry
A £10,000 reward is being offered for information one week on from the "brutal'' murder of a pensioner whose body was found at his home.
Malcolm Ballantyne was discovered dead by a family member in Glebe Place, Saltcoats, North Ayrshire, at about 1.10pm last Friday.
The 72-year-old, known as Malky, was well-known in the area and has been described as a "well-liked and well-respected'' member of the community.
Detectives, who are yet to establish a motive, have returned to the scene of the murder in an effort to jog the memories of potential witnesses.
The charity Crimestoppers is offering a reward of £10,000 for information that secures the arrest and conviction of the person responsible.
Leading the inquiry, Detective Chief Inspector Gary Cunningham, of Police Scotland's major investigation team, said: "It has now been a week since Mr Ballantyne was brutally murdered in his own home and at this time we have nothing to suggest a particular motive for the attack.
"I am confident that the answers to what happened to Mr Ballantyne lie within the local community and it is vitally important that anyone with information contacts us immediately.
"Mr Ballantyne was an upstanding member of the community and his family as well as those who knew him have been left completely devastated by this horrendous crime.
"They deserve to know who is responsible for his death and why.''
Detectives want to hear from anyone who was near Glebe Place in the hours running up to when Mr Ballantyne was discovered who might have seen something suspicious.
They also want to speak to anyone who was in his company on the day before his death.
Mr Cunningham added: "You may think what you know is insignificant but let us be the judge of that as no matter how minor your information is it could be that critical piece that helps lead us to whoever is responsible.''
Angela Parker, Crimestoppers national manager for Scotland, said: "Malcolm was a well-liked, well-respected man within the community and this is why we and the police are at a loss as to why someone would have committed this callous crime.
"I'd ask anyone who may have been in the area at the time of this attack to contact Crimestoppers anonymously on 0800 555 111 if you have any information, no matter how small, safe in the knowledge nobody will know you spoke to us.''
The full reward will only apply for information passed directly to Crimestoppers on the telephone number or via an anonymous online form at www.crimestoppers-uk.org.
Police have also set up a dedicated telephone line. Anyone with information about Mr Ballantyne's death can call officers on 01563 505172 or text 07437 942153.
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.
Most Viewed Pictures On Heart
Recently Played Tracks
To listen live, choose your preferred location:
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Find out more about some of the companies advertising on Heart Scotland- East.