Palestinian authorities said a grave site discovered at the Nasser hospital, the main medical facility in central Gaza, contained nearly 400 bodies
"More than 35 Taliban militia members were killed or wounded, in a series of explosions that took place," the militant group said, referring to blasts on Saturday and Sunday.
There was no immediate comment from the Taliban about the death toll.
Sources had told Reuters on Saturday at least three people were killed and about 20 were wounded in blasts in Jalalabad, the capital of Nanjarhar province. The sources had said they were citing information from hospitals and eyewitnesses.