An Israeli air strike on Wednesday on the municipal building in Nabatieh, a major town in southern Lebanon, which serves as a provincial capital, killed the mayor Ahmed Kahil and at least five others, two security sources said.

The Israeli military said it struck dozens of Hezbollah targets in the Nabatieh area and dismantled underground infrastructure.

Israeli navy forces, meanwhile, have struck dozens of Hezbollah targets in southern Lebanon, in cooperation with troops on the ground, Israel’s military said on Wednesday.

Hours earlier at least one Israeli strike hit Beirut’s southern suburbs, Reuters witnesses said, after the U.S. said it opposed the scope of Israeli attacks in Lebanon’s capital.

The Israeli military has in recent weeks carried out strikes on Beirut’s southern suburbs, the stronghold of Hezbollah, without advance warnings, or with a warning for one area while striking more broadly.

Israel’s closest ally the United States warned it would restrict its military support, if Israel doesn’t improve aid to Gaza in 30 days.

The Israeli military said it conducted a strike on an underground Hezbollah weapons stockpile in the southern Beirut suburb of Dahiyeh.

“Prior to the strike, numerous steps were taken to mitigate the risk of harming civilians, including advancing warnings to the population in the area,” the Israeli military said.