Two men sought in David Twigg murder in Burgh Le Marsh
Police are looking for two men in connection with the murder of Lincolnshire businessman David Twigg.
Mr Twigg, 46, and his partner Julie Dixon were confronted at their premises in Burgh Le Marsh, on the evening of 13 March, police said.
The two men were described as white and wearing dark clothing with their faces obscured. One was about 6ft and the other 5ft 7in tall.
Police have appealed for anyone who saw anything suspicious to contact them.
Results of an initial post-mortem examination have failed to establish the cause of Mr Twigg's death.
Police said early indications suggested that he died after breathing in smoke, but this is yet to be confirmed.
In a statement, Ms Dixon said: "I am so numb with pain, my heart is broken. I've not just lost my partner of 15 years, I've lost the love of my life, my best friend and soul mate.
"David was a truly talented a gifted craftsman who never failed to deliver quality products, he was fun-loving, caring and a well-liked gentleman."
Mr Twigg ran a joinery business in the town, near Skegness.