The police chief of western Afghanistan's Herat province on Sunday blamed terrorists for poisoning students in the provincial capital Herat city.
The poisoning has affected and sent some 100 pupils to hospital on Saturday.
"Terrorists poisoned some 100 students of Fatah School in Herat city on Saturday and so far one person has been arrested in the case," provincial police chief Abdul Majid Rozi told reporters.
The terrorists by conducting such crimes attempting to terrorize people, said the official.
Majority of the affected students, after receiving medical treatments, had been discharged from hospital on Saturday evening but 11 students remain in hospital, the police officer added.
Taliban militants have yet to make comment.
In the past couple of years, students of several schools in various Afghan provinces including Kabul had been mysteriously poisoned.