However, Pakistani officials claim the group was killed while preparing explosives, not from any targeted military operation., The US has made no official comment about the incident.

Officials said at least five Islamic militants from the Gaza Strip were preparing explosives for use in Israeli cities.

When the soldier found Qeis in his shelter, he was calmly preparing explosives.

The Syrian group's plans were disrupted two months before the bombing when the German police raided an apartment where terrorists were preparing explosives.

But it is illogical to prepare such explosives in a place where there are women and children.

They also found a cache of guns, ammunition and equipment used to prepare explosives.

On numerous occasions, Palestinian bomb makers have killed themselves accidentally while preparing explosives.

If someone were wearing a full protective suit while preparing a bomb or bottling liquid explosives, these machines probably wouldn't detect anything suspicious on that person.

"Militants were given training to prepare explosives, and the madrasa was used to provide ideological motivation," the report said.

"A group from Izzedine al-Qassam brigades were in the building preparing explosives, which exploded," he said.