According to CNN:

Israel rounded up members of the Hamas-led Palestinian government Thursday, and warplanes fired a rocket into the Palestinian Authority’s Interior Ministry building in Gaza City.

The arrests of Palestinian Cabinet ministers and parliament members took place as the Israeli military continued its thrust into Gaza. The Israel Defense Forces says the action is part of an attempt to rescue kidnapped army Cpl. Gilad Shalit.

Early Thursday, a body found near the West Bank city of Ramallah was reported to be that of Eliyahu Yitzhak Asheri, 18, a settler seized by Palestinian militants hours after Shalit’s kidnapping Sunday, Israeli security sources said.