The individuals arrested all originate from Pakistan. They are being suspected of planning and coordinating the terrorist attack, which claimed the lives of almost 150 people, mostly children, according to GEO TV.
Afghan security forces were acting basing on the information received from their Pakistani colleagues. Afghan authorities have already informed Pakistan about the arrest. Further investigation is underway, GEO TV reported.
The Taliban claimed responsibility for the massacre, saying that it was in response to army operations launched against the group in Pakistan's northwestern region of Waziristan. After the attack, Pakistan stepped up military operations against rebel groups in the country's northwest and lifted a moratorium on the death penalty, in place since 2008.
The Taliban group, formed in the 1990s, is seeking to establish sharia law in Afghanistan and Pakistan. The group is known for its terrorist attacks against authorities and civilians in both countries.