Supporters of the Hezbollah group raise their fists and cheer, as they listen to a speech by Hezbollah leader Sayyed Hassan Nasrallah speaking via a video link during a ceremony to mark the fourth anniversary of the assassination of Iran's Quds force General Qassem Soleimani, who was killed in a US drone strike in Baghdad, in the southern suburbs of Beirut, Lebanon, Jan 3, 2024. (PHOTO / AP)

BEIRUT - Hezbollah leader Sayyed Hassan Nasrallah warned on Wednesday night to attack Israel "without restraint" if Israel expands its attacks against Lebanon, local TV channel al-Manar reported.

Nasrallah made the remarks in a televised speech to commemorate the fourth anniversary of the assassination of top Iranian commander Qassem Soleimani, who was killed in a US drone attack on Jan 3, 2020.

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Meanwhile, Nasrallah said the assassination of Saleh al-Arouri, Hamas' deputy chief, and other Hamas officials in Beirut a day earlier was "a dangerous crime".

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He said the current confrontation on Lebanon's southern border has been limited, considering the priority of protecting Lebanon's stability and security.

A shell from Israeli artillery explodes over a house in al-Bustan, a Lebanese border village with Israel, south Lebanon, on Oct 15, 2023. (PHOTO / AP)

However, "if Israel expands its attacks ... all our power will be used to attack Israel; we do not fear the war, and we are not hesitant about it; otherwise, we would have stopped fighting on the southern front", he said.

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The Lebanon-Israel border witnessed increased tension since Oct 8 after the Lebanese armed group Hezbollah fired dozens of rockets toward Israel in support of the Hamas attacks on Israel the previous day, prompting Israel to respond by firing heavy artillery toward southeastern Lebanon.