Hatami was severely wounded after a teenager suicide bomber detonated his explosives during a theatre show in Estiqlal high school earlier this month.
At least one German civilian was killed and nearly 20 others were injured following the suicide attack.
The Taliban militants group in Afghanistan claimed responsibility behind the attack, saying that the attack was carried out in response to a show which was spreading immorality.
But the Afghan Intelligence – National Directorate of Security (NDS) said the Haqqani terorrist network was involved behind the attack.
NDS spokesman, Haseeb Sediqi said the network used a 15-year-old child to carry out the attack.
The attack targeting the civilians was widely condemned both in Afghanistan and on international level.
The Special Representative of the UN Secretary-General for Afghanistan, Nicholas Haysom, said “This deliberate targeting of civilians at a place for learning and culture is an atrocity that must be condemned in the strongest terms.”