A small Israeli force has entered the Gaza Strip, but the army offered no details beyond confirming the operation was taking place.
Local Palestinian residents said the Israeli force included tanks and other armored vehicles.
Tensions have risen sharply between
There were no immediate reports of injuries or damage.
A spokesman confirmed military activity in the area by a small force against what he called "terror threats".
Troops entered the coastal strip at the southern Sufa crossing.
Palestinian sources quoted by the Israeli media said clashes broke out between gunmen and Israeli troops, with the help of helicopters and tanks.
On Thursday night, Israeli forces accompanied by helicopters were reported to be operating in the central and northern Gaza Strip.
Daily violence between militants in
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Pro-Hamas security man in