The Israeli military said its forces opened fire Wednesday on Lebanese Hezbollah militants who were planting an explosive device near the interim Israeli-Syrian border in the northern Golan Heights.

A Israeli artillery unit fired towards the suspects, hitting two of them, who tried to plant a bomb near the security fence along the Israeli-Syrian border, an Israeli army spokeswoman said, adding that Hezbollah was behind the planned attack.

The incident came after a raid last Monday, in which Israeli warplanes reportedly hit a convoy on the Lebanon-Syria border. Reports said that the convoy was carrying advanced missiles and missile launchers for Hezbollah.

But Israel has not acknowledged carrying out the strike, which reportedly killed four Hezbollah operatives, including a senior commander.

Israeli forces in the Golan Heights have been on high alert since Hezbollah vowed last week to revenge the Israeli airstrike. Hezbollah says it will choose the time, place and proper way to respond to it.