Taiwan prosecutors said on Thursday that they have so far questioned four people as witnesses in their investigation into a Taiwanese company linked to pagers that detonated last week in Lebanon in a deadly blow to Hezbollah. Security sources said Israel was responsible for the pager explosions that raised the stakes in a growing conflict between the two sides. Israel has neither confirmed nor denied its involvement. How or when the pagers were weaponised and remotely detonated remains a public mystery, and the hunt for answers has involved Taiwan, Bulgaria, Norway and Romania. Taiwan-based Go…