Palestinians in the Gaza Strip on Thursday launched a rocket attack on the local American International School in protest against US President George W. Bush's visit to the Palestinian territories.

No one was hurt in the pre-dawn attack, but eyewitnesses said large parts of the school were damaged by an RPG mortar, as well as other explosive devices.

This is the second time that the school has come under attack in the past few months. The previous attack occurred in April, when arsonists set fire to the school building in the northern Gaza Strip.

No group claimed responsibility for Thursday's attack, which came only hours after several Palestinian groups called on Palestinians to kill Bush. The attack also followed demonstrations in the Gaza Strip condemning Bush and calling on the PA leadership to boycott his visit.