Tens of thousands of mourners gathered in the northern Gaza Strip for the funerals of eight people killed in Israeli air strikes late on Thursday.
The funeral was for all those killed, militants and bystanders
The attack - in which four Palestinian bystanders died - was one of a series targeting senior militant figures.
It came after Islamic Jihad said it was behind Wednesday's suicide bomb attack in Hadera that killed five Israelis.
The Quartet of nations behind the peace road map have called on Syria to shut down Islamic Jihad's Damascus office.
Thursday's Israeli air strike killed a leading member of Islamic Jihad, Shadi Mohanna, and three of his associates as well as four bystanders. Fifteen people were injured.
The funeral procession set off from al-Qassam mosque in Beit Lahiya to the Jabaliya refugee camp.
Armed Islamic Jihad members fired repeatedly in the air. The procession was joined by militants from the al-Aqsa martyr's Brigades, the Abu Rish Brigades and the Palestinian Resistance Committees, reports say.
As they gathered, a further missile was fired by an Israeli drone, killing a Palestinian driving in northern Gaza.
Several Palestinians were inside the car at the time of the strike, witnesses said.
The man killed was Majid Nata, a member of the militant group the al-Aqsa Martyrs' Brigade.
A spokesman for the group said the drone fired at the vehicle after it had fired rockets at the southern Israeli town of Sderot.
Israel has promised "wide-ranging and ceaseless" operations after the suicide bombing in Hadera.
Islamic Jihad said it carried out the bombing in revenge for the Israeli killing of one of its senior leaders, Luay Saadi, in the West Bank on Monday.
In response to the Hadera bombing, the Quartet - the US, Russia, the UN and the EU - called on Syria to close Islamic Jihad's office and "prevent the use of its territory by armed groups engaged in terrorist acts".
It also urged all parties "to exercise restraint", and said it "strongly encouraged" the efforts of the Palestinian Authority to curb the activities of the armed groups.
But Israeli Defence Minister Shaul Mofaz has told an Israeli newspaper that he doubts whether Israel can reach a comprehensive peace settlement with the current Palestinian leadership.
In an interview with Yediot Aharonot, Mr Mofaz said it would be necessary to wait for the next generation to emerge.
"We could reach interim agreements [but] I don't think that a Palestinian state will see the light of day in the coming years," Mr Mofaz said.