The assailant pursued the fleeing passengers , stabbing one a second time , before he attempted to flee the scene .
The assailant attacked a number of passengers with the knife before they were able to open the doors of the bus and flee .
The assailant pursued the fleeing passengers , stabbing one a second time , before assailant attempted to flee the scene .
The assailant attacked a number of passengers with the knife before they were able to open the doors of the bus and flee .