Five passengers, all men, succumbed to injuries they suffered when a tree fell onto the bus they were travelling in this morning (06), police said.
A bus belonging to Mathugama Depot was on its way back to Deniyaya when it met with the accident near Liberty Roundabout in Colombo.
Twelve more wounded passengers are receiving treatment at Colombo National Hospital.
Police said Duplication Road has been closed as the fallen tree still blocks the road.
