At least nine people were killed and 2,800 others, including Hezbollah fighters and medics were injured on Tuesday when the pagers they use to communicate exploded across Lebanon, security sources and the Lebanese Health Minister said.

Lebanon’s Information Minister Ziad Makary said the government condemned the detonation of the pagers as an “Israeli aggression”. Hezbollah also blamed Israel for the pager blasts and said it would receive “its fair punishment”.

A Hezbollah official, speaking on condition of anonymity, said the detonation of the pagers was the “biggest security breach” the group had been subjected to in nearly a year of conflict with Israel.