Gaza City - An Israeli airstrike on a mosque in the northern Gaza Strip killed 11 people late Saturday afternoon, and wounded 50 others, 24 of them seriously, Palestinian sources reported.

An Israeli military spokesman had no immediate comment on the report, which comes on the eighth day of an Israeli offensive, mainly conducted through aerial attacks on the Gaza Strip.

A second airstrike on Rafah, at the southern end of the Strip, killed four people, Palestinians said, bringing the death toll from Israeli operations Saturday to 19 Palestinians.

Some 461 Palestinians, the majority of them militants, have been killed, and 2,300 injured, in the Israeli operation, which began last Saturday after militants fired rocket barrages on southern Israel.

Four Israelis - three civilians and a soldier - have also been killed by Palestinian rockets, dozens more injured, and hundreds treated for shock. (dpa)