The Israeli army has warned some 100,000 Palestinians in the eastern Gaza Strip to evacuate their homes, military sources said on Wednesday.
AFP correspondents saw flyers dropped over the Zeitun neighbourhood southeast of Gazassouy City, and residents there and elsewhere also reported receiving recorded phone and text messages urging them to evacuate by 5:00am GMT.
The flyers explained that the army would be carrying out "aerial strikes against terror sites and operatives" in Zeitun and Shujaiya, since "a high volume of rocket fire at Israel" was from there.
A similar message was sent to residents of Beit Lahiya in northern Gaza.
"The evacuation is for your own safety," the leaflet read, warning residents to not return to their homes until further notice.
Similar messages had been sent to Beit Lahiya with a Sunday deadline, causing the exodus of 17,000 people who took shelter in United Nations schools.
Watch video: Israel asks Palestinians in Gaza to leave ahead of airstrikes
The warnings came on the ninth day of Israel's Operation Protective Edge, which aims to stamp out rocket fire from Gaza militants.
Since July 8, militants have fired nearly 1,000 rockets and mortars into the Jewish state, and Israel has carried out around 1,500 strikes against targets inside the Gaza Strip, the army says.
Palestinian medical sources said 205 people were killed in the Israeli strikes. On Tuesday, the first Israeli was killed by a rocket fired from Gaza at the Erez border crossing.