GAZA, May 30 (Xinhuanet) -- The Palestinian National Authority (PNA) on Sunday condemned an overnight Israeli airstrike on Gaza City which killed three Palestinians and wounded nine others.

    Palestinian chief negotiator Saeb Erekat was quoted by the radio "Voice of Palestine" as saying that the PNA strongly condemns all Israeli aggressive attacks against their people.

    During the raid in the Zaytoon neighborhood in Gaza City, two militants of Islamic resistance movement Hamas and one bystander were killed, with nine others injured, including a woman.

    Ezzedine Al Qassam, the armed wing of Hamas, has vowed revenge after the killing of its militants.

    In another development, Israeli army arrested Sunday morning three members of Palestinian security apparatus in the West Bank city of Ramallah, Palestinian security sources reported.

    An Israeli force comprising three military jeeps stopped a car at the security gate of Palestinian leader Yasser Arafat's besieged headquarters and arrested the two people in the car, they said.

    Palestinian police officer Kifah Odeh, who is also a member of Palestine Liberation Organization (PLO) executive committee's secretary General Mahmoud Abbas' security units, was later arrested in another car in Ramallah, they added. Enditem