The early morning strike came a day after another Israeli airstrike cut off a main highway linking Lebanon with Syria, leaving two huge craters on either side of the road.
Earlier on Oct 2, the militants destroyed three Israeli Merkava tanks with rockets.
The escalating fighting between Israel and Hezbollah continued Saturday as both sides traded strikes as the war in Gaza nears one year.
Tripoli is much farther north than the majority of Israel’s strikes, which have been concentrated in southern Lebanon and Beirut.