Two people from Taiwanese companies were questioned as part of a probe into pagers that exploded while being used by Hezbollah operatives in Lebanon, investigators said Friday, as top officials insisted the devices were not from the island.

The pagers, deemed by Hezbollah to be safer than cellphones, were probably rigged with explosives before they were delivered to Lebanon, experts said.

Gold Apollo, a wireless communications device manufacturer in Taiwan, said it did not make the pagers used in the Lebanon explosion attack.