A 12-year-old kid and two teenaged young ladies passed on at the Colombo National healing center where 10 others were being dealt with after they were saved, doctor's facility representative Pushpa Soysa told AFP.
She said three other individuals who were pulled from the destruction of homes were at that point dead when they touched base at the healing facility on Friday night, raising the affirmed loss of life to six.
Police said many troops had joined the look for survivors after the debacle at Kolonnawa on the northeastern edge of the capital.
President Maithripala Sirisena requested troops and police to join firefighters in the safeguard after the 300-foot (91-meter) high dump burst into flames and caved in, authorities said.
Police said the genuine size of the harm stayed hazy.
"A scan for survivors is under way," the police said in an announcement.
Many homes given way after overwhelming downpours overnight made the trash mountain move, authorities said. It turned out to be additionally destabilized after a fire broke out, activating avalanches that covered abodes.
Military representative Roshan Seneviratne said 100 officers were at that point burrowing through hills of waste. Substantial earth moving gear was additionally being sent, he included.
Neighborhood inhabitants said many individuals had left the territory after the night's substantial rain.
"We consider 40 homes have been pulverized," a catastrophe administration official told journalists.
Around 800 tons of strong waste is added every day to the open dump, rankling occupants who live close-by.
Sri Lanka's parliament was cautioned as of late that the 23 million tons of trash decaying at Kolonnawa was a genuine wellbeing risk.
Endeavors are in progress to assemble a power plant that could change the strong waste into fuel.
Friday's fire penniless out as the nation denoted its customary Sinhala and Tamil New Year and a great many people were in their homes celebrating.