More than 900 children were killed in the war last year, raising concerns that the violence is escalating.
No group has claimed responsibility but the Taliban targeted the court previously and vowed further attacks against the judiciary.
Operations against all militant groups including the 'Islamic State of Iraq and the Levant' (ISIL) will continue this winter, officials say.
Tensions have been escalating between al-Qaeda and the 'Islamic State of Iraq and the Levant' as the two groups vie for the upper hand.
The Taliban are falling into the vortex of their own internal conflicts, observers say.
After the fall of the Syrian town tarnished its image, the 'Islamic State of Iraq and the Levant' launched a new magazine to camouflage its losses.
The 'Islamic State of Iraq and the Levant' suffered heavy losses last year in terms of both money and manpower, experts tell Diyaruna.
At least 56 people were killed in three militant attacks January 10.
ISIL bears blame for slaughtering 13 coal miners in Baghlan January 6, officials say.
Sectarian attacks committed by the 'Islamic State of Iraq and the Levant' (ISIL) in Afghanistan are meant to divide Shia and Sunni Muslims, but Afghans are resisting the message of hate.