A private bus toppled at 91-kilometre post of the Southern Expressway.
The incident occurred at around 7.20 am today (Apr. 28).
Police said 18 persons including the driver were admitted to Karapitiya Teaching Hospital for treatment.
It is found that the bus toppled after one of the tyres burst.
The occupants were residents of Meegastenna and they were heading to Kataragama on a pilgrimage.