344 students  were kidnapped from Government Science Secondary School

A freed Nigerian schoolboy plays football as he returns home, after he was rescued by security forces, in Kankara, Nigeria December 19, 2020.

'You will die in the forest' - Nigerian schoolboys describe kidnap ordeal

Freed Nigerian schoolboys walk after they were rescued by security forces in Katsina, Nigeria, December 18, 2020.

Students left footwear behind at the school as they were abducted by the gunmen

The weekend attack was the third of its kind in the span of a few years

A total of 530 suspected cases have been reported, including 48 that have been confirmed by lab testing