An elderly woman died after a fire in a flat at a Hong Kong public housing estate just hours after a blaze in a luxury residential building injured six people and forced at least 110 residents to flee on Sunday. Police said the blaze was reported after neighbours spotted heavy smoke billowing from the flat occupied by the 70-year-old woman, who was identified only by the surname Wong, on Sunday afternoon. Firefighters battled the blaze and discovered the body after they extinguished the flames. The fire, at Tak Loong House, Tak Long Estate in Kai Tak, was reported just after 2pm. Police said preliminary investigations suggested the blaze started after a burning joss stick set fire to nearby items. The incident happened just after a blaze at a luxury block of flats injured six people, including a firefighter, and forced more than 100 residents to flee the building. The six, most suffering from the effects of smoke and one from a burn to an arm, were taken to hospital for treatment. Four were sent to Queen Mary Hospital in Pok Fu Lam and two to Ruttonjee Hospital in Wan Chai. Body found in Hong Kong flat after firefighters put out blaze The blaze, at Regal Crest on Robinson Road in Mid-Levels, broke out around noon, and was upgraded to a third-alarm fire at 1.24pm because of its intensity. The fire was said to be mostly extinguished by about 3.45pm. Dense smoke was seen billowing from the windows of the flat on fire, on the 23rd floor. The floors immediately above and below were also affected. The Fire Services Department mobilised 156 firefighters and 28 paramedics, with 32 firefighting vehicles and 12 ambulances. Teen killed, mother and 5 others hurt after fire guts Hong Kong flat Authorities said 70 people fled the building themselves and firefighters helped 40 more spread across several floors to evacuate. The department said the cause of the fire was still under investigation, but a preliminary investigation suggested there were no suspicious circumstances. “We spoke to the occupant of the flat involved in the fire. We do not rule out at this stage that it was the operation of a karaoke machine that caused the fire,” Acting Divisional Officer Chiu Wing-fai said. Fires in the city are rated on an alarm scale of one to five in line with their seriousness.