Explosive attacks targeting educational institutions killed at least six people, including students, and injured 11 Tuesday in a mostly Shiite neighborhood of Afghanistan's capital city, police said.
The blasts, which occurred in rapid succession, were investigated and more casualties were feared, according to Kabul police spokesman Khalid Zadran and the city's Emergency Hospital. Several of the wounded were in critical condition.
The explosions occurred inside Abdul Rahim Shaheed High School and within the Mumtaz Education Center several miles away, both in the predominately Shiite Muslim neighborhood of Dasht-e-Barchi. There were no immediate reports of casualties at the Mumtaz Center.
The guards in the narrow street leading to the two-story high school said they saw 10 casualties. Inside the school, an Associated Press video journalist saw walls splattered with blood, burned notebooks and children's shoes.
The AP spoke to several private guards in the area, but they refused to give their names, fearing repercussions from the Taliban security force cordoning off the area.
A suicide bomber appeared to have blew himself up inside the sprawling compound, which can hold up to 1,000 students, witnesses said. It wasn't immediately clear how many children were in the school at the time of the explosion.
The school is teaching students until the sixth grade after Afghanistan's hardline Taliban rulers went back on a promise to allow all girls to attend school.
No one has claimed responsibility immediately. The area has been targeted in the past by the deadly Islamic State terrorist group affiliate of Afghanistan, which reviles Shiite Muslims as heretics.