"The force stormed the Blida municipality building, where employee Ibrahim Salameh was sleeping, and enemy soldiers proceeded to kill him," it said.
Village residents cited by NNA said the raid lasted several hours, and that Israeli forces withdrew at dawn.
In the nearby border village of Adaisseh, NNA reported that Israeli forces blew up a hall for religious ceremonies at dawn.
Over the past days, Israel has stepped up its strikes on Lebanon, often saying it is targeting Hezbollah positions.
On Tuesday, the spokesman for the UN rights commission, Jeremy Laurence, said Israeli forces had killed 111 civilians in Lebanon since the ceasefire went into effect.
Hezbollah was badly weakened during more than a year of conflict with Israel, and the United States has intensified pressure on Lebanese authorities to disarm the Iran-backed group.
On Wednesday, during a meeting of the ceasefire's monitors in the Lebanese border city of Naqoura, US envoy Morgan Ortagus said Washington welcomed the "decision to bring all weapons under state control by the end of the year".
The Lebanese army "must now fully implement its plan", she added.