Police in Dong Nai Province Saturday found toxic chemical waste collected in a dump site being burnt in the open or dumped in local waterways without any treatment.
The chemicals, mostly industrial waste, were contained in oil drums and plastic cans at the dump run by Hoang Thi Bich Lien.
Some of the waste was burnt, some buried or just dumped into local waterways.
Lien told the police she brought the waste from businesses around the province and nearby Tay Ninh Province.
Nguyen Phi Hung, deputy police chief of the province, said Lien's place has operated for around two years without any permit.
He said they are investigating the case further.