Kabul, Afghanistan (CNN) -- Twenty-one people at a girls' school in northern Afghanistan fell sick on Wednesday and authorities there suspect they were poisoned.
Fifteen students, five teachers and a principal of the Baghawi Awlia girls' primary school in Sar-e Pul province lost consciousness, according to Asif Nang, spokesman for the Education Ministry.
Authorities suspect the Taliban, which banned girls from going to school when it ruled Afghanistan from 1996 to 2001.
Since girls' schools began reopening after the Taliban were overthrown, facilities, female students and teachers have been the victims of attacks.
Qamaruddin Shekeb, provincial deputy governor, said it's the third time such an incident occurred in the province, and Nang said it's the seventh suspected poisoning incident in the country.