The kindergarten teacher allegedly put sodium nitrite in the children's food, police said.
BEIJING — A kindergarten teacher has been arrested in eastern China after 23 students were sickened in a suspected act of deliberate poisoning, police said Tuesday.
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The teacher is believed to have poisoned the children's food with sodium nitrite, the Jiaozuo city police said on their official microblog.
Overexposure to sodium nitrite can be toxic and possibly fatal. Police said they were still looking for a motive in last week's incident.
Schoolchildren in China have been the target of often fatal attacks by people bearing grudges or considered mentally ill.
In 2002, 42 people, mostly schoolchildren, died after eating snacks laced with rat poison in the eastern city of Nanjing. The killer, who apparently was jealous of his rivals' thriving business, was swiftly sentenced to death and executed.