KATHMANDU, AUGUST 6 A woman was killed and 19 others injured after a passenger bus crashed into the wall of the Gwarko flyover in Lalitpur on Thursday. The bus (Ba 2 Kha 3590), which was travelling from Bhaktapur to Satdobato, rammed into the flyover wall, police said. According to Lalitpur District Police Range Superintendent of Police Gautam Mishra, the deceased was a 40-year-old woman. The 19 injured passengers are receiving treatment at various hospitals. Police said preliminary investigations suggest the accident may have been caused by excessive speed.