Rescue workers inspect the wreckage of a Sri Lankan air force plane that crashed in Haputale on January 3, 2020. - A Sri Lankan air force plane crashed in a tea-growing mountainous region on January 3, killing the four crew on board, a military official said. (Photo by STR/AFP via Getty Images)

A Sri Lankan air force plane crashed in a tea-growing mountainous region Friday, killing the four crew on board, a military official said.

The Chinese-built Y-12 had taken off from the southern airbase of Wirawila and was heading to Ratmalana, south of Colombo, when it crashed, spokesman Chandana Wickramasinghe said.

“We are still investigating the cause of the crash,” Wickramasinghe said, adding that all four officers on the plane were killed in the crash at Haputale, 200 kilometres (125 miles) east of Colombo.

It was the worst air crash in Sri Lanka since an AN-32 military transport plane came down just outside the capital in December 2014 killing all five crew onboard.

(AFP)