LThe reports said Israeli forces used white phosphorus in the mountainous areas of Ali al-Taher in southern Lebanon. The alleged use of the incendiary substance has raised further concerns over the humanitarian situation in the region.
A day earlier, Israeli attacks reportedly killed 11 people in Lebanon, including seven members of the same family.
Iran has strongly condemned what it described as Israeli aggression against Lebanon and called for an end to the attacks.
According to the report, the latest escalation began after Hezbollah launched attacks on Israel following the outbreak of the US-Israel war against Iran earlier this year.
Israel subsequently expanded its military operations in Lebanon and took control of a large area in the south.
Israel has said it intends to keep its forces in the area to prevent further attacks on northern Israel.
Foreign news agencies cited in the report say at least 4,300 people have been killed in Lebanon since the latest escalation began on March 2.