Kolkata: A woman was crushed to death by a speeding bus at South Kolkata’s Thakurpukur area on Thursday night. The victim identified as Shampa Biswas died on the spot. The victim was crossing the road when the speeding bus mowed her down. She was immediately rushed to a nearby hospital where the doctors declared her brought dead. The killer bus fled the spot. Police launched a search to locate the bus and nab the driver.