Police said the children might have got in the community through broken fencing and been buried by dumped earth.
Police have stepped up security in the area following reports of looting and said they arrested 18 men suspected of stealing victims' belongings.
Police said 1,117 arrests had been made in relation to the violent protests that started in June.
Police have been deployed in Talisay town, a village just across the island. On Wednesday, more towns in Bantangas province were put on lockdown.
Planned big-ticket developments on the island highlight China's commitment to liberalization and the world's economy
Police also busted 491 groups for scams involving "unfreezing national assets" and 2,981 groups for offering fraudulent loans.
搜索引擎排名优化
Police urged citizens to be vigilant of any phone calls, emails and social media contact demanding their name, family status and bank account numbers or requiring them to transfer money.
Phone calls to Huazhu went unanswered on Wednesday.
Planners release environmental impact assessment for 100.3-kilometer corridor
Photo taken on March 9, 2018 shows the Macao border zone building on the artificial island of the Hong Kong-Zhuhai-Macao Bridge, South China. The Macao border zone of the world's longest sea bridge connecting Hong Kong, Zhuhai and Macao was officially handed over to Macao on Thursday, Macao's Government Spokesperson's Office said in a statement. [Photo/Xinhua]