( CNN ) -- The CEO of the Hungarian company behind a huge toxic spill on Thursday said he does n't know whether he 's responsible for the disaster , but added , `` I have moral duties and I will fulfill them . '' Zoltan Bakonyi , the chief executive of the MAL aluminum plant , spoke with CNN 's Diana Magnay a day after he was released from jail pending trial . Bakonyi was detained on Monday , accused of public endangerment and harming the environment . `` It 's said I should be responsible although I do n't feel it , '' Bakonyi told Magnay . He insisted that MAL was in compliance with all Hungarian safety regulations and pointed out that he has only been CEO for two years . Bakonyi argued that the problems presented by the reservoir and the accumulation of toxin in it stretched back 25 years or more . But he added that it is his `` moral duty '' is to `` help '' and put his energies `` 120-percent into the aid effort . '' Bakonyi categorically denied that a hole was present in the reservoir in the days or weeks before the spill happened . Bakonyi said he had visited the reservoir in the weeks before the spill happened . But , he said he had n't seen the photo released by the The World Wildlife Fund showing one of the pools of sludge -- a byproduct of the process to turn bauxite ore into aluminium oxide -- leaking into a nearby field . The WWF says the photo was taken in June . Bakonyi also denied the spill was a consequence of overproduction or improper payment of workers . He maintained that there was no way to anticipate the accident . `` The only way anyone could have imagine this happening , '' he said , `` was in a terrorist attack . '' MAL has `` an idea '' about how the spill occurred , but Bakonyi wo n't comment on what it is . He says no statement on causes will be released until Hungarian authorities complete their own investigation . The Hungarian government announced Wednesday that MAL would resume operations by the end of the week . Meantime , as cleanup operations continued , workers were racing to complete three emergency dams designed to contain a possible second toxic spill from the plant . Hungarian emergency services officials said more ruptures and cracks are evident in the dam walls , and that it 's just a matter of time before they break and spill an additional 500,000 cubic meters of toxic red sludge across the countryside . Nine people died after a river of mud engulfed the villages of Kolontar , Devecser , and Somlovasarhely last week . More than 100 people were injured and many times that number had to be evacuated . The sludge from the spill reached the Danube -- Europe 's second-largest river -- within days , raising fears of wider contamination in Hungary and countries downstream , including Croatia , Serbia , Bulgaria , Romania and the Ukraine . But water rests released Friday found that the pH level of the Danube water was only slightly higher than normal . EU toxins experts still have nothing conclusive on the exact chemical composition of the sludge . Aluminum and bauxite processing normally involves compounds that include arsenic , cyanide , cadmium and chromium . CNN 's Diana Magnay contributed to this report .
Bakonyi 's Zoltan Bakonyi spoke to Diana Magnay , CEO of CNN aluminum plant . Bakonyi faces charges of public endangerment and harming the environment . MAL denied there was evidence of reservoir leak before spill happened . Workers continue to prepare for possible new dam break .