CAIRO, Oct 30 (Reuters) - Israeli planes and tanks pounded areas in eastern Gaza on Thursday, Palestinian residents and witnesses said, a day after Israel said it remained committed to a U.S.-backed ceasefire despite launching more lethal bombardments in the territory. Witnesses said Israeli planes carried out 10 airstrikes in areas east of Khan Younis in the southern Gaza Strip, while tanks shelled areas east of Gaza City in the north. No injuries or deaths were reported. The Israeli military