Israeli tank fire kills four after truce begins: Hamas media

GAZA (Reuters) - Israeli tanks opened fire in the southern Gaza Strip after a 72-hour truce began on Friday, a Reuters photographer and the Palestinian Interior Ministry said, and Hamas media reported that four people were killed. The Israeli military had no immediate comment. (Reporting by Nidal al-Mughrabi; Writing by Jeffrey Heller in Jerusalem; Editing by Giles Elgood)