Israel said it would keep its border crossings with the Hamas-ruled Gaza Strip closed for a second day on Thursday, prompting the Islamist group to warn that the move could wreck a week-old ceasefire agreement.
Israel closed the crossings on Wednesday after rockets fired by Islamic Jihad fighters.
Islamic Jihad said the attack was retaliation for the Israeli army's killing of one of its commanders in the occupied West Bank.
Hamas spokesman Sami Abu Zuhri said Israel was breaching the ceasefire that began a week ago.
"If this closure continues it will render the deal for calm meaningless," Abu Zuhri said.
"Securing the continuation of the Palestinian factions' commitment to the deal hinges on the Occupation's lifting of the siege and the opening of all the crossings in the first 10 days," he said, referring to Israel.
Israel sharply cut back on the supply of goods into the territory a year ago.
However, Israeli newspaper Jerusalam Post quoted Israeli defense officials as saying Wednesday night they planned to open the crossings between Gaza and Israel on Friday if there were not any rockets fired.
Last Mod: 26 Haziran 2008, 18:08