Rescuers searched for survivors under the rubble of destroyed buildings in Beirut on Thursday as Lebanon observed a day of mourning after Israeli strikes across the country killed more than 200.

U.S. President Donald Trump will continue to discuss with Israeli Prime Minister Benjamin Netanyahu the idea of including Lebanon in an Iran war ceasefire deal, his spokeswoman said Wednesday.

Hezbollah said Wednesday it has a "right" to respond to Israel's deadly wave of strikes across Lebanon, which authorities said left at least 112 people dead and more than 800 wounded.

The Israeli military said it struck a Hezbollah commander in Beirut on Wednesday, after Lebanese state media reported that Israel had targeted the Tallet al-Khayyat residential neighborhood in the capital.

Lebanon announced the reopening of the Masnaa border crossing with Syria starting Wednesday evening, state media said, after it had been closed for several days due to an Israeli threat to target it.

The Israel-Hezbollah conflict in Lebanon is not covered by a temporary ceasefire deal between Washington and Tehran, U.S. public broadcaster PBS quoted President Donald Trump as saying Wednesday.

The U.S.-Iran ceasefire does not apply to Israel's strikes against Hezbollah in Lebanon, White House press secretary Karoline Leavitt told Axios, contradicting statements from Iran and the Pakistani mediators.

Iranian Foreign Minister Abbas Araghchi raised "ceasefire violations" by Israel with Pakistani mediators on Wednesday, an Iranian ministry statement said, as reports citing senior officials warned that Tehran could pull out of the truce over attacks on Lebanon.

The health ministry said in a preliminary toll that the series of Israeli strikes across Lebanon on Wednesday killed dozens of people and wounded hundreds.

"In a very serious escalation, Israeli warplanes launched a wave of simultaneous airstrikes on several Lebanese areas, resulting in, in an initial count, dozens of martyrs and hundreds of wounded," the ministry said in a statement.

A Hezbollah official said the militant group backed by Iran is giving a chance for mediators to secure a ceasefire in Lebanon.

In the meantime, the official said, "We have not announced our adherence to the ceasefire since the Israelis are not adhering to it."