A fire at a Shamshuipo flat yesterday which claimed the life of an 84-year-old man is believed to have been caused by a flame from a kerosene stove which ignited his clothes. It was the city's second fatal blaze in two days after a 94-year-old man and his 50-year-old son died when a fire ripped through a flat in Tsuen Wan on Tuesday. Five fire engines and an ambulance were yesterday deployed to Nam Yat House on Nam Shan Estate after dense smoke was seen billowing from a seventh-floor flat just before 9.30am. Firefighters broke down the locked door of the flat and doused the flames within 30 minutes. The victim, identified as Kwok To, was found lying unconscious near the kitchen. He had suffered extensive burns to his upper body and was declared dead at the scene by paramedics. A Fire Services Department spokesman said Kwok had mobility difficulties and used a walking stick. He lived with his 52-year-old wife, who turned on the stove to warm soup for her husband before she left home for work. 'We suspect that the victim's clothes were accidentally lit by the stove,' said an investigator. Kwok also leaves behind a 20-year-old son, who was not at home when the fire broke out. Firefighters said foul play was not suspected, but a special investigation team had been set up to look into the cause of the fire.