Janusz Smoderek murder: Hunt for suspect Stephen Sleaford
Police have urged a man wanted in connection with the murder of a father-of-three in Lincolnshire to hand himself in.
Detectives want to trace Stephen Anthony Sleaford over the stabbing of Janusz Smoderek, a 48-year-old Polish man found dead in a garden in Boston.
Photographs of Mr Sleaford have been sent to ports and airports.
A Lincolnshire Police spokesman urged members of the public not to approach the 37-year-old.
The body of Mr Smoderek was discovered in a garden off Sleaford Road on Sunday morning.
Police said he died after an altercation close to a nearby Asda store, which involved Sleaford as well as an unknown man and a woman.
The suspect is 5ft 6in (1.52m) tall, of average build with brown hair that is greying at the sides and is "known to police", said the force.
The Boston man has an East Anglian accent, brown eyes and may or may not be wearing glasses.
He is heavily tattooed on his hands and arms and also has distinctive tattoos on his neck including a Leeds United Rosette Division 1 champions flower.
A man matching Sleaford's description and wearing the distinctive red and black jacket he is thought to have worn on the night of the incident has been identified on CCTV footage.
It is not known if he has remained in the area or has gone further afield.
Det Ch Insp Stuart Gibbon, leading the investigation, said anyone who saw Mr Sleaford should contact police or Crimestoppers.
He confirmed that a woman who was present when the altercation took place has been traced but police were keen to identify a second man who was with Sleaford.
The second man was white but there was no detailed description of him, police said.
Det Ch Insp Gibbon urged people to use caution in speculating about the murder on social networking sites, after what he described as "a number of irresponsible comments which are wholly inaccurate and not helpful to the investigation".
As part of ongoing enquiries to locate Sleaford, armed officers attended an address in Skirbeck Road in Boston on Tuesday afternoon.
Mr Smoderek, who was married and lived in the Revesby Avenue area of Boston, is understood to have worked at a local vegetable packing firm.