Hundreds of students gathered outside the smouldering remains of a school in the Bangladeshi capital on Tuesday to demand answers after a military jet slammed into the campus, killing dozens of children.

A Chinese-made F-7 jet suffered a mechanical failure and crashed into a school in Bangladesh on Monday, killing at least 31 people, including the pilot, according to an official tally

A Bangladeshi military training aircraft crashed into the campus of a school in Dhaka, killing the pilot and at least 19 others, mostly students, officials say.