An explosive device apparently a suicide vest exploded inside a Medressah or religious school in Shin Ghazak village of Marja district at around 07:00 a.m. local time leaving five seminarists dead and injured six others," Zirak told Xinhua.
He also did not rule out Taliban involvement in the incident, saying the militants often carry out such attacks to terrorize people.
The blast took place when locals were celebrating Nawroz or New Year in Afghan calendar falling on March 21.