At least 171 Afghan girls and female teachers were taken to a local hospital . Their drinking water had been poisoned , local officials say . Officials blamed extremists opposed to women 's rights . In 2010 , more than 200 schoolgirls and teachers were sickened in similar circumstances .
At least 171 Afghan girls and female teachers were admitted to a local hospital . Their drinking water had been poisoned , health officials say . Officials blame extremists opposed to women 's education . In 2010 , more than 100 schoolgirls and teachers were sickened in similar poisonings .