The assault lasted approximately twenty minutes, during which time hand grenades were thrown into the school building, allegedly killing at least two people. The prisoners remained hidden during the night, some of them preparing to defend themselves with makeshift weapons made from broken furniture or garden tools.[3] The wounded numbering about 120 to 150 were placed in the Pavilion C basement. The following morning of May 23, the witnesses said, new soldiers or paramilitary units came to the jail, opened the drains and threw in hand grenades.[1] That day four people went crazy and hanged themselves in their cells.[2]