Lebanese soldiers and medics stand guard as crane operators remove the vehicle at the site of an Israeli strike in the southern port city of Sidon. AFP
Lebanon's state-run National News Agency said the dawn strike killed one person.
Hamas named him Khaled Ahmed al-Ahmed and said he was on his way to pray.
"As we mourn our heroic martyr, we pledge to God Almighty, and then to our people and our nation, to continue on the path of resistance," the Palestinian militant group said in a statement.
The Israeli army confirmed claimed he was "the head of operations in Hamas's Western Brigade in Lebanon".
Israel has continued to launch regular strikes in Lebanon despite the November 27 truce, which sought to halt more than a year of hostilities with Hezbollah, including two months of full-blown war.
Under the deal, Hezbollah was to pull back its fighters north of Lebanon's Litani River, some 30 kilometres (20 miles) from the Israeli border, and dismantle any remaining military infrastructure to its south.
Israel was to withdraw all its forces from Lebanon, but it has kept troops in Lebanon and occupied five positions.
A Lebanese security source told AFP that Hezbollah had withdrawn fighters from south of the Litani and dismantled most of its military infrastructure in the area.
Lebanon has respected its commitments and has called on the international community to pressure Israel to end its attacks and withdraw from the five border positions.
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