In the Chinese city of Jiaozuo kindergarten with signs of poisoning admitted 23 children. They ate a Breakfast cereal.
On suspicion of poisoning the children, police arrested a kindergarten teacher.
The motives of the man are unknown, however, the Chinese media reported that he wanted revenge colleague.
Examination showed a high level of sodium nitrite in food.
Now, 15 children have been discharged, seven in a hospital, one child in serious condition.
The kindergarten temporarily closed and children transferred to other institutions.