검찰은 A군이 사망 뒤 약 3시간 동안 방치된 점을 미심쩍게 여겨 해당 어린이집 보육교사들의 근무체계를 들여다보다가 이런 정황을 포착했다.
The prosecution found the situation while looking into the work system of daycare teachers at the daycare center in question, suspecting that A was left unattended for about three hours after his death.