Indonesian police have arrested 13 people after shocking images of alleged abuse against small children at a daycare center went viral, sparking outrage across the nation, officials said Monday.

Police last Friday raided Little Aresha, a daycare center in Yogyakarta on Java island, following a report from a former employee.

CCTV footage circulating on social media showed children, most under the age of 2, lying on the floor wearing only diapers, their hands and feet bound with rags. The police have confirmed that the footage is authentic.