Detectives investigating the murder of a family of four found stabbed to death in Northampton have named a man, from Coventry, who they want to speak to in connection with the killings.
The suspect, 52-year-old Anxiang Du, is a business associate of the deceased family, who has a Chinese herbal medicine shop in the Pallisades shopping centre in Birmingham and is of Chinese origin.
Detective Superintendent Glyn Timmins said: “Mr Du routinely wears a baseball cap as he has a bald patch at the back.
“We believe that he may have with him a rucksack which he wears across him. We would seek the public assistance in finding Mr Du so that we can question him.”
Jifeng Ding, his wife Helen, 47, and their two daughters Xing, 18, and Alice, 11, were found stabbed to death at the weekend at their home in Wootton, Northampton.

The family had not been seen by neighbours since Friday night. It is thought they were attacked inside the detached property before being discovered by police on Sunday.
Det Supt Timmins confirmed post mortems on the four bodies had been carried out showing they had all died as a result of stab wounds and that it was now a homicide investigation.
He added that a silver Vauxhall Corsa could be the key evidence in solving the murder.
The car, registration BG60 PMO, had been hired by the family while their car was being repaired and it has now gone missing.
Det Supt Timmins advised the public not to approach Mr Du or the car but contact the police with any information and to let them continue their investigation.
Jifeng Ding was a lecturer at Manchester Metropolitan University and his wife Helen taught Mandarin at a nearby secondary school.
Tributes have been paid to the lecturer on the social networking website Facebook.
One user, Lance Challinor, wrote: “I was looking at the notes I made in one of his lectures, RIP Jeff I hope justice is served!”.
Another user wrote: “May Whoever Did This Rot In Hell”.
The immediate area around the family home is still cordoned off. Flowers have been left outside the house, which lies in a quiet cul-de-sac.
Anyone with information is asked to contact Northamptonshire Police on 0800 096 1011 or 0207 158 0126 between 8am and midnight and ask for the Operation Nene incident room.
Alternatively they can call Crimestoppers anonymously on 0800 555 111.