From The Daily Mail:
The terrorists, thought to be from Boko Haram, set a locked hostel on fire, before shooting and slitting the throats of those who tried to climb out the windows. Some were burned alive.
Adamu Garba said he and other teachers who ran away through the bush estimate 40 students died in the assault that began around 2 a.m. Tuesday at the Federal Government College at Buni Yadi.