Schoolchildren were among those killed and injured in another series of deadly blasts in Afghanistan's capital city, Kabul, Tuesday morning.
At least six people were killed and over ten injured, Khalid Zadran, acting spokesman of the Taliban Kabul police wrote on Twitter, adding that security forces were on the scene and an investigation was launched into the attack. Unofficial reports indicate a higher number of casualties.
No one has immediately claimed responsibility for Tuesday's attack.
United Nations Assistance Mission in Afghanistan condemned the "heinous" attack in a tweet saying, "those responsible for the crime targeting schools and children must be brought to justice."
United Nations envoy Deborah Lyons extended deepest sympathies to victims' families and wished for a speedy recovery for the wounded, in the same tweet.
The blasts happened at the entrance of Abdul Rahim Shahid high school located in a Shia Hazara neighborhood of the city. Hazaras are an ethnic/religious group that has been the target of attacks in the past. Most of the previous attacks in the same neighborhood were claimed by ISIS affiliates. Tuesday's blast was the first attack in this neighborhood after the Taliban takeover in August.