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.

More than 170 people were injured after the training aircraft crashed, military officials said. The country’s interim leader called the loss “irreparable.”

A Bangladeshi air force jet crashed near a college in the capital Dhaka on Monday, with emergency services responding to reports of casualties on the ground.