THE death of a 31-year-old man, who was found electrocuted on his own bed, remains a mystery. A jury - sitting before Coroner Rodney Venning - returned an open verdict in the case of unemployed Szeto Wai-yee, who died of electrocution. The Coroner's Court heard that Szeto's decomposing body was found on his bed with the lower half of his body covered by a quilt at his father's wine shop in Western District on January 29 this year. Investigating police found Szeto's left arm and ankle encircled by electric wires connected by a plug to a lamp socket hanging from the ceiling of the shop's attic. The nylon strings used to tie Szeto's wrists had been cut off by an ambulanceman before police arrived. The ambulanceman also pulled out the plug from the socket on the dangling lamp. A police sergeant who went to the scene found it would have been difficult, but not impossible, for a person of Szeto's build to reach the plug and connect it to the socket while sitting on the bed with his hands bound. Szeto was estimated to have died between January 22 and 26 after his father, Szeto Yin, had left the territory to join his family in China for the Lunar New Year. Senior forensic pathologist Dr Bobby Shum described the circumstances of the case as ''very peculiar''. Based on the assumption that Szeto had deliberately arranged the electric wiring himself, Dr Shum said the electrocution could have been either suicidal or accidental. Mr Szeto Yin confirmed that his property in the shop remained untouched. He said he and a colleague returned on January 29 and went up to the shop's attic to look for his son. ''I found my son lying on the bed with his face turning black and his hands tied with nylon string . . . Upon seeing that, I shouted to my colleague downstairs,'' Mr Szeto said. ''I then reported the matter to the police.'' He said his son had not spoken of suicide or mentioned any financial difficulties. Earlier, Mr Venning said the jurors could return a verdict of death by suicide if they were satisfied beyond reasonable doubt that Szeto had intended to kill himself by turning the electric switch on after he made the wiring arrangement. He told the jurors they could return a verdict of death by misadventure if they found Szeto was conducting some sort of experiment or game which unexpectedly took his life. He also told the jury to bear in mind that it was a ''no-return situation'' for Szeto to have his wrists bound by nylon strings and his left arm and ankle tightly wrapped in electric wires.