Taiwanese prosecutors have questioned four people, including current and former employees, in their investigation of a Taiwanese company linked to pagers used in deadly explosions in Lebanon, allegedly targeting Hezbollah.

Israel is suspected of being behind the attack, though it has not confirmed this.

Taiwan-based Gold Apollo denies manufacturing the devices, which were traced to a Hungary-based company.

The investigation is ongoing, with Taiwan working to resolve the case quickly, the New York Post has reported.

Gold Apollo’s president and a related company employee were previously questioned, but have not commented.

Written by B.C. Begley