Authorities said that three explosions rocked a boys' school in the Afghan capital's Shia Hazara area on Tuesday.

Khalid Zadran, a spokesman for the Kabul police, stated on Twitter that the explosions at the Abdul Rahim Shahid high school "caused casualties among our Shiite brothers."

The school is located in the western district of Dasht-e-Barchi, a predominantly Hazara neighborhood previously targeted by ISIS.

The blasts on Tuesday occurred as students exited their morning sessions, a witness told AFP.