A second wave of device explosions killed nine people and wounded more than 300 in Hezbollah strongholds in Lebanon on Wednesday, officials said, stoking fears of an all-out war in the region.

Nine people were killed and more than 100 wounded in the latest attacks, the Health Ministry said, also describing the devices targeted as walkie-talkies.

This followed a day after the simultaneous explosion of hundreds of paging devices used by Hezbollah, which killed 12 people, including two children, and wounded up to 2,800 others across Lebanon, in an unprecedented attack blamed on Israel.