The Israeli military has carried out a wave of airstrikes targeting branches of a financial institution affiliated with Lebanon’s Hezbollah, saying the quasi-banking system is being used to fund the militant group’s military wing.

Israel’s military announced Sunday it is now taking aim at the Lebanon-based Hezbollah’s financial arm and will attack a “large number of targets” in Beirut and elsewhere. Explosions began in Beirut’s southern suburbs about an hour later.