"In a short while, we will attack the weapons under these buildings. The force of the explosions as a result of the missiles which are under the buildings may cause damage to the buildings and even their collapse," military spokesman Daniel Hagari said at a televised briefing.

Hagari said Hezbollah had constructed three buldings in the south Beirut suburb of Dahiyeh with designated underground spaces for "storing strategic weapons, with the buildings above acting as a shield".

"The way the missiles are stored in these buildings allows them to be moved and launched outside of the buildings within minutes."