For more news and videos visit ➡ http://english.ntdtv.com
Follow us on Twitter ➡ http://twitter.com/NTDTelevision
Add us on Facebook ➡ http://on.fb.me/s5KV2C
About 156 Afghan schoolgirls were poisoned on Tuesday, in the third such attack in recent weeks.
A local police chief said investigators at the school found powder that appeared to have been sprayed in the air.
Scores of unconscious students were taken to hospital.
One of the poisoned girls said she can't really remember what happened.
[Amena Jan, Poisoned Student]:
"When I entered the class I smelled something and then I started to vomit and fell unconscious. I don't remember what happened after that."
In previous attacks, for which police blamed conservative radicals, an unidentified toxic powder was used to contaminate the air in classrooms.
The radicals oppose the education of women and girls.
Since 2001 when the Taliban was toppled from power by U.S.-backed Afghan forces, females have returned to schools, especially in the capital Kabul.
They were previously banned from both work and education.