Palestinian police are reported to have arrested a suspect in the Gaza kidnapping last week of three Britons. The three have since been released.
The man, a local member of the al-Aqsa Martyrs Brigades, the armed wing of the mainstream Fatah movement, was whisked into an unmarked car by unidentified men in the town of Rafah.
Meanwhile, two Palestinian militants have been killed in an Israeli missile strike on a car in the northern Gaza Strip.
The Israeli military said it targeted a vehicle carrying a senior member of Islamic Jihad in the Jabalya refugee camp.
A third man travelling in the car is said to be in a critical condition in hospital.
Campaigning under way in Palestinian poll
Separately, campaigning in the Palestinian parliamentary elections has been taking place despite doubts about whether the poll will go ahead as planned on 25 January.
The Palestinian leader, Mahmoud Abbas, has said he will postpone the poll if Israel prevents the 200,000 Palestinians living in East Jerusalem from voting. Today, Israeli police have been preventing palestinian politicians from campaigning in the city.
Mr Abbas's ruling Fatah party has started its campaign at the grave of the late Yasser Arafat while its election rival, Hamas, has begun to rally in Gaza.
The Palestinian Deputy Prime Minister, Nabil Sha'ath, who heads Fatah's election campaign, earlier said whether the election goes ahead all depends on Israel.
