Merseyside Police said the incident happened at around 4pm on Tuesday, August 11, near the playing fields towards Elton Head Road. The victim was reportedly approached by another man who got out of a grey-green coloured vehicle before he was allegedly attacked. Police said the incident happened near the playing fields towards Elton Head Road (Image: Google Maps)He was taken to hospital with a serious head injury. Detective Inspector Ruth Tickle said: "This was an unprovoked assault on a man in his 70s who suffered a serious head injury. "I would appeal to anyone who was on Elton Head Road yesterday and saw what happened or the vehicle involved to come forward and speak to us.