Israeli forces have ended an operation in the northern Gaza Strip less then 24 hours after they raided the area.
The raid came a day after an operation in southern Gaza during which 11 Palestinians were killed.
According to the Israeli army, the raid was intended to stop mortar and rocket attacks on nearby Jewish settlements and Israeli territory.
Palestinian militants have been carrying out such attacks regularly, although few have caused casualties.
The Israeli operations in Gaza on Sunday occurred as Mahmoud Abbas, the front-runner for the 9 January elections for a successor to Yasser Arafat, was campaigning nearby.
Mr Abbas criticised the Israeli military for carrying out the operations so close to the elections, but also called on militants to stop their rocket attacks.
Israel has promised to pull its forces out of Palestinian towns at least 24 hours before voting begins.
