Israeli air strikes on Gaza have killed at least 10 Palestinians including a senior Palestinian militant leader.
The Israelis said Zohair al-Qaisi, secretary general of the Popular Resistance Committees, was attacked because he was planning an attack.
Another militant was killed with him.
The Islamist Hamas movement which runs Gaza said at least eight more died in later Israeli air strikes.
The Israeli military said dozens of rockets were fired into Israel.
They were apparently fired in retaliation for the killing of the PRC leaders.
It is one of the worst outbreaks of violence along the Gaza border for several months.
Islamic Jihad said the dead men were part of its military organisation.