Rafah (Palestinian Territories): Israeli planes killed seven Palestinians and wounded another six in Gaza in retaliation for suspected Islamist militants killing eight Israelis near the Egyptian border.
Two of the Gaza dead were members of the Popular Resistance Committees, a radical Islamist group that Israel blames for Thursday's fatal ambushes in the southern Negev desert. Two more were from Islamic Jihad.
The Israeli military promised to probe the deaths of five Egyptian policemen killed the previous day as its forces pursued the militants in the frontier zone.
Egyptian officials said that Cairo had complained to Israel over the incident and Prime Minister Essam Sharaf vowed Egyptian blood would not be "spilled unanswered."
While Israeli aircraft pounded Gaza on Friday, Palestinians fired a steady hail of rockets and mortar shells into southern Israel, at least 25 since the start of the day, the military said.
Three Israelis were wounded in the city of Ashdod, police said.
As the cross-border violence ratcheted up, Palestinian President Mahmud Abbas sought United Nations pressure on Israel to stop the Gaza raids, Palestinian negotiator Saeb Erakat said.
"Abbas asked for an emergency session of the UN Security Council to demand a halt to the Israeli attacks on Gaza," Erakat said.
A total of 14 Gazans have been killed since Thursday evening, when Israel began raids in retaliation for the Negev shootings. Medics said more than 40 were injured.
London-based rights group Amnesty International called for both sides to safeguard civilian lives.