Hezbollah says it is acting in support of Hamas - which is also backed by Iran and proscribed as a terrorist organisation by Israel and many Western countries - and will only stop its attacks once the fighting in Gaza ends.

This week's explosions have also deepened concerns about the scope of potentially compromised devices, particularly after such bombings have killed or injured so many civilians. Here's what we know so far.

Two children are among the 12 killed after electronic pagers belonging to Hezbollah simultaneously exploded in Lebanon and Syria. Lebanese caretaker health minister Firas Abiad confirmed thousands of people have also been injured in the explosions on Tuesday (17 September).