DETECTIVES investigating the death of a former solicitor found with stab wounds have released new CCTV footage as they try to trace a couple.
The pair left the Maiden Castle area of Durham when paramedics arrived to treat Peter Maine after he was found close to the running track at 8am on September 1.
The 56-year-old, who had worked at Hall and Co in Easington Colliery, was confirmed dead at the University Hospital of North Durham a short time later.
Officers have launched a murder-style investigation and say in the weeks since his death specialist teams have conducted searches of the area around Maiden Castle and interviewed more than 70 witnesses.
New footage, which follows on from images released of Mr Maine as he set out on his run from Old Elvet, shows a couple walking on North Bank towards Baths Bridge from the direction of the city.
The man is wearing dark long sleeved top and dark trousers and the woman is wearing dark trousers and a red long sleeved top.
Detective Inspector Lyn Peart, who is co-ordinating the investigation, said: “We know this couple walked along towards where Mr Maine was found and left the Maiden Castle area as the ambulance arrived.
“We are yet to speak to this couple and would encourage them to contact us.”
Police would also like to speak to a number of other witnesses.
The including a runner who was in the area of Maiden Castle car park at around 8.15am and was wearing a red long sleeved top and black shorts and was running with two black Labrador sized dogs.
They would also like to speak to a cyclist seen cycling on North Bank towards Baths Bridge from the direction of the city around 8am and arrived in the Maiden Castle area around 8.10am before heading over the bridge onto the playing fields.
He was wearing a black long sleeved top, long black bottoms, white or light coloured cap and white or light coloured footwear.
The final witness police are trying to trace is a man who was walking on the riverside path at Maiden Castle on the Sherburn side of the river in the direction of Shincliffe around 7.50am.
He is described as being in his mid-20s, 5ft 10ins tall, of medium build with short very dark thick hair, wearing a dark top and black combat style trousers with pockets on the side.
Police are still treating his death as “suspicious and unexplained.”
Anyone with information is asked to call police on 101 or call Crimestoppers anonymously on 0800 555 111.