An Israeli strike hit Lebanon's northern city of Tripoli for the first time early on Saturday, a Lebanese security source said, after more bombardment hit Beirut's suburbs and Israeli troops sought to make new ground incursions into southern Lebanon.

The source said a Hamas official, his wife and two children were killed in the strike on a Palestinian refugee camp in Tripoli. Hamas-affiliated media said the strike killed a leader of the group's armed wing.

The Israeli military did not immediately comment on the strike on Tripoli, a Sunni-majority port city.