Lebanon's Hezbollah was still handing its members new Gold Apollo branded pagers hours before thousands of the devices blew up this week, two security sources said, indicating the group was confident they were safe despite an ongoing sweep of electronic kit to identify threats.

The president and founder of a Taiwanese pager company linked to the detonation of thousands of pagers targeting Hezbollah in Lebanon was questioned by prosecutors late into the night on Thursday, then released.

Lebanon blamed Israel for attacks on Hezbollah's devices killed 37 and wounded around 3,000, wreaking bloody havoc on the militant group.