Nearly all of the 31 killed when the plane crashed were children. Dozens more were being treated as the nation declared a day of mourning.

A Bangladesh air force training jet has crashed into a school campus, killing at least 19 people. Here’s the latest we know: “Bangladesh Air Force’s F-7 BGI training aircraft crashed in Uttara. The aircraft took off at 13:06 [07:06 GMT],” the Bangladesh military’s public relations team said.

The F-7 BGI is a fighter jet that China specially made for Bangladesh. It replaced the older models in the Bangladesh Air Force, like the F-7M and F-7MB. Apart from Bangladesh, other countries such as Myanmar, Nigeria, Iran, Egypt, Zambia, and Sudan also use this aircraft.

Video footage from a school in a northern suburb of Dhaka captures a massive fire and dense smoke following the aircraft's collision with a two-storey building. Over 170 people sustained injuries in the crash.