Police have named the man as Thomas Baird. He'd been stabbed and was pronounced dead in the early hours of Saturday after the blaze at his home in Westerdale, Hemel Hempstead, Hertfordshire.
A post-mortem examination carried out yesterday concluded that the 63-year-old died of trauma to the head and neck, and stab wounds to the chest.
A 30-year-old man from Hemel Hempstead, who was arrested on suspicion of murder on Saturday, remains in police custody.
More top news
Tonight it will be feeling chillier but will be brighter tomorrow.
The clinic has apologised for the human error that resulted in the private health information of HIV patients being leaked.
The multi-millionaire strip-club owner defended his policy of taking 23% of the service charges made by waitresses in his bars.