GAZA, Nov 12 (Reuters) - Gunfire killed at least five people on Monday at a Fatah rally attended by hundreds of thousands of supporters of the defeated faction in Hamas-ruled Gaza, a medic at a local hospital said. Fatah accused Hamas security men of opening fire at the memorial ceremony for Yasser Arafat, a day after the third anniversary of the death of the iconic Palestinian leader. Hamas said its forces had responded to fire from Fatah gunmen. (Reporting by Nidal al-Mughrabi, Editing by Jeffrey Heller)
