The attack on the militant group has prompted several investigations into the supply chain behind the devices that detonated this week.

Cristiana Bársony-Arcidiacono has not appeared publicly since the deadly attack that targeted Iran-backed Hezbollah and that has been widely blamed on Israel.

The mother of the woman whose company was linked to thousands of pagers that exploded in Lebanon and Syria says her daughter has received threats and been advised by the Hungarian secret services not to talk to media.