Police have released further information about a man they are trying to trace after a dog walker was stabbed in an unprovoked attack.
Officers were called to Bluebell Close, in Oadby, at about 8.45am yesterday by the ambulance service after a man was found seriously injured on land nearby.
The victim, who is believed to be aged 62, was walking his dog when he was stabbed in the neck.
Last night the man remained in a serious condition in hospital.
Yesterday police cordoned off the area and were searching for the suspect, believed to be another dog walker.
This morning the cordon had been lifted, but police were still at the scene.
Officers have released a further description of the man they are looking for.
He is white, 6ft to 6ft 2in tall, aged 30 to 35, of slim build with short dark hair. He was wearing a dark coloured baseball cap, a mid-grey T-shirt and blue jeans.
They have described the dog he had with him as a "good-sized" springer spaniel, possibly crossed with a border collie or similar sized collie breed.
Detective Inspector Martin Smalley from the force's serious crime team, said: "Someone, in Oadby or the surrounding areas, knows who this man is. We would urge them to get in touch.
"We've already collated a great deal of information but we know there is someone out there who has that crucial piece of the jigsaw, who knows who our suspect is. Please get in touch."
Officers were yesterday conducting house to house inquiries with detectives also contacting local veterinary surgeries in the hope that may help locate the owner of the dog.
Police dogs could be seen searching the area, known locally as the gravel pit, with officers yesterday morning.
Detective Inspector David Swift-Rollinson said he believed the victim was stabbed with a knife, although a weapon has not been recovered. He said the victim's family had been told about the attack.
Det Insp Swift-Rollinson said: "We believe it was a random, unprovoked event, although we don't think there is any reason for people to necessarily be concerned or worried."
Anyone with information is asked to call 101.
