Human rights advocates are calling for an independent investigation into the deadly explosions of pagers and walkie-talkies in Lebanon and Syria.

Blasts that killed at least 37 people, wounded nearly 3,000 on Tuesday, Wednesday targeted communication devices used by Iran-backed Hezbollah

For millions of Lebanese, this week’s mass explosion of pagers and walkie-talkies and the bloody aftermath are painfully similar to the horrific explosion four years ago of haphazardly stored ammonium nitrates that tore through Beirut’s port.