On Saturday, multiple blasts outside the Sayed-ul-Shuhada High School at a Shia Muslim dominated locality in Kabul had killed over 68 people and injured 150. Taliban had denied involvement in the blasts.
Priest Wilhelmus Tulak said he heard a "very loud explosion" at around 10.30 am on Sunday after a second mass finished. He had that suspected bomber who attempted to enter the church grounds on a motorbike but was stopped by a security guard.