Israel's military Saturday set up roadblocks across border towns and roads in a strategic valley in southern Lebanon, a day before the deadline for it to withdraw from the area under an agreement that halted its war with the Hezbollah militant group.

Israeli forces will remain in southern Lebanon beyond a 60-day deadline stipulated in a ceasefire deal with Hezbollah because its terms have not been fully implemented, the Israeli prime minister's office said on Friday.

The deadline for the Israeli withdrawal from southern Lebanon expired early on Sunday, but troops will remain in some areas as Israel says a ceasefire deal with Hezbollah has not been fully implemented.