FACTBOX - Developments in Gaza fighting

(Reuters) - Following are developments in the fighting in the Gaza Strip as of 8:30 p.m. British time:

(* Denotes new or updated items)

* GAZA - Three people, probably civilians, were killed and a number of others wounded in an airstrike on Zeitoun neighborhood, a Hamas stronghold, medical workers said.

* GAZA - Israeli reserve troops have moved in to take over positions from regular soldiers, freeing them to move deeper into Gaza City, Israel Defence Force spokesman says.

* GAZA/ISRAEL - The Palestinian death toll in the 17-day-old Israeli offensive reached 911, more than a third of them children, the Hamas-run Health Ministry said. Thirteen Israelis have been killed -- 10 soldiers, and three civilians killed by Hamas rocket fire.

GAZA-ISRAEL BORDER - Israel allowed 114 truckloads of food and medical supplies into the Gaza Strip, Palestinian officials said.

GAZA - Israeli air strike kills two Palestinians, including one militant, at a shopping center in Gaza City, medical workers said. They did not give the identity of the second fatality.

ISRAEL - The Israeli army said about 20 rockets and mortar shells were fired into southern Israel, causing no injuries. A rocket struck a house in Ashkelon where medical workers said several people were treated for shock.

GAZA - Medical workers said Israeli forces killed a Palestinian militant and four civilians in fighting.