The blast was probably caused by a gas leakage, but we are looking into all probabilities including a terror act.
This is above all now a threat to the population, because the leadership and officials of the firm did not take the necessary steps to isolate the isotope.
It's premature to talk about an act of terror. The investigators will find out if the poisoning was accidental or not.
It?s a threat to the population because the leadership of the plant is taking no steps whatsoever to remove the radioactive material or isolate access to the plant.