Deadly explosions in Lebanon linked to rigged pagers have raised concerns about the safety of modern personal devices.

Taiwanese company Gold Apollo says that it authorized its brand on the pagers that exploded in Lebanon and Syria but that another company based in Budapest manufactured them.

A company based in Hungary was responsible for manufacturing the pagers that exploded in an apparent Israeli operation targeting Hezbollah, another firm said Wednesday. The attack marked a new escalation in the conflict between the two foes that has often threatened to escalate into all-out war.