Detectives carried out more door-to-door inquiries last night three weeks after a man sustained life-threatening injuries as he walked home.
Officers were hoping to find people who may have seen Craig Howson, aged 33, as he walked to his home in Rotherham Road in Cundy Cross, Barnsley, from his sister’s house just a few streets away.
Craig arrived home injured but was unable to tell his parents what had happened to him.
When his condition deteriorated they went outside to alert police officers who were already investigating a collision on the same street.
A van had crashed into some bollards and had been found abandoned at the side of the road.
Officers have since made some arrests over the collision.
A South Yorkshire Police spokeswoman said: “Extensive inquiries have taken place in a bid to discover what happened to Mr Howson.
“CCTV has been trawled, police patrols have been increased in the area, and extensive searches have taken place.
“However, the circumstances surrounding how Mr Howson came to suffer his injuries remain unknown.”
Detective Inspector Jade Brice, who is leading the investigation, said: “We are very much keeping an open mind as to how Craig came to suffer these very serious injuries.
“The assistance of the public could prove absolutely crucial to this inquiry.
“I would urge anyone with any information, however apparently insignificant, to call us.
“Let us be the judge of how important the information you hold is.
“Craig’s family are understandably devastated by what has happened.
“Someone out there may be able to provide the answers they desperately seek.”
Anyone with any information about the incident on Tuesday, April 8, can call South Yorkshire Police on 101 or Crimestoppers anonymously on 0800 555111.