Israeli helicopters have fired six missiles at an office of Palestinian President Yasser Arafat's Fatah Movement in Gaza City.
The missiles struck in the Zeitoun neighbourhood of Gaza, where six Israeli soldiers were killed in an ambush on an armoured vehicle a week ago.
It was not immediately clear whether there were any casualties.
Israeli Court clears house demolitions
The Israeli army has said it plans to destroy hundreds more homes in the Gaza Strip, after the Supreme Court said demolitions could go ahead.
Chief of Staff Lt-Gen Moshe Yaalon says the homes along the border with Egypt needed to be destroyed to prevent them being used by Palestinian militants.
The court earlier rejected an appeal by Palestinians against the destruction.
More than 100,000 Israelis attended a rally last night calling for an Israeli withdrawal from the Gaza Strip.
The rally, in Tel Aviv, was organised to show support for Israeli Prime Minister Ariel Sharon's pullout plan.
The controversial plan has been rejected by the ruling Likud party but polls show most Israelis support it.
Two missiles struck buildings in Gaza City early this morning, destroying an office affiliated with the Fatah military organisation.
The strikes come just hours after helicopters opened fire on a pro-Hamas newspaper in the city.
According to Israeli military sources, there was no one inside either of buildings at the time of the attacks, but bystanders - among them at least two children - were injured.
The army said the first office was used by the al-Aqsa Martyrs Brigades and was used to plan attacks against Israeli targets.
However, Palestinian witnesses said it belonged to Fatah's political faction, and not the militants.
