One held, two sought over arson Police arrested a man, 18, on suspicion of setting fire to construction materials in Sau Mau Ping yesterday. Officers were looking for two other men in connection with the case. A security guard found the trio setting a fire in the lift lobby of a residential block in Hong Ning Road at 3.16am. The guard, 63, doused the flames before firemen arrived. He was slightly injured and treated at United Christian Hospital. Bus passengers flee blaze About 20 passengers were evacuated when a fire broke out on a Kowloon Motor Bus double-decker in Sha Tsui Road, Tsuen Wan, at 2.05pm. Firemen put out the blaze and no one was injured. Police said initial investigations indicated an electrical short circuit caused the fire. Washing machine catches fire A short circuit was suspected to have caused a washing machine to catch fire in a fifth-floor Kwai Chung flat at about 9.50am. Firemen evacuated seven residents and doused the flames. The kitchen was damaged, but no one was injured. Police said the 54-year-old tenant had left the flat after turning on the washing machine. Pair scalded in duel with teapots Police arrested a 60-year-old man and a 57-year-old woman after they poured hot water from teapots on each other during a dispute at a restaurant in On Tai Road, Tai Po, at about 11.30am. The pair were treated at Alice Ho Miu Ling Nethersole Hospital for minor burns to their legs. Police investigate burn marks Police are investigating an arson attack after a 31-year-old woman found burn marks on the door and door curtain of her flat in Shun On Estate, Sau Mau Ping, at 8am.