GAZA, Nov. 19 (Xinhua) -- Newly launched two Israeli airstrikes killed three Palestinians in the Gaza Strip shortly before noon on Monday, as the raids against Gaza entered the sixth day, Palestinian sources said on Monday.

An Israeli drone killed Abdullah Abu Khater, 30, and his brother Mahmoud after hitting their motorbike with a missile, witnesses said. Medical sources said a boy was also seriously injured in this attack in Khan Younis town.

In Gaza city's neighborhood of Tal AL-Hawa, an Israeli drone also hit a car marked with Press signs, killing one Palestinian. His identity or whether he was a journalist remained unknown. It came a day after six journalists were wounded when Israeli airplanes attacked two buildings housing media offices in Gaza City.

The Hamas-run Health Ministry said the general death toll of the Israeli aggression has mounted to 91 while more than 700 were wounded, including 200 children.

Earlier, the ministry said that 13 Palestinians were killed since midnight.

On Sunday, Israel killed 11 civilians, nine of whom were from one family, in a single airstrike on a house in Gaza City. The raid was the deadliest since the beginning of the offensive Wednesday.

The violence flared up when Israel killed Wednesday the leader of Ezz el-Deen al-Qassam Brigades, the armed wing of Islamic Hamas movement.

Hamas also kept firing rockets into Israel, using the Iranian- made projectiles of longer range that have reached the outskirts of Jerusalem and the central city of Tel Aviv.