One senior Afghan security official in Kabul said on Tuesday that Thursday’s bombing killed 96 Islamic State militants, 13 of them major commanders. The official, who spoke on the condition of anonymity because he was not authorized to talk to the news media, provided the names and basic information about the commanders, most of whom were from the tribal areas across the border in Pakistan, but who also included some Indian citizens and Central Asians. However, the official provided no proof of the deaths or information on how officials reached the number of 96.

The United States military, despite repeated attempts, did not provide comment.

The Islamic State’s local radio outlet, which was unaffected by the bombing, continues to broadcast into Jalalabad, the urban center in the east. It broadcasts half-hour programs during the day and an evening program that often lasts more than an hour.

As early as the day after the bombing, it broadcast a call-in program in which voices of men who claimed to be fighters in the area who were not affected by the powerful bomb could be heard between rhyming Islamic chants.

“The media was expecting that this bomb would have killed all the Islamic State fighters or forced them to flee, but that is not the case,” the program’s anchor said. “After the big bomb, our warrior, brave youth became a shield in front of them.”

Islamic State radio, known as Voice of the Caliphate, has been reconstituted after it was destroyed last year by a targeted American drone attack. Afghan officials said that the earlier operation was run by five militants from the back of a small truck that switched locations often to avoid being targeted.