A human rights group said Israel must investigate the death of a Reuters TV cameraman and three others in an Israeli army strike.

Thousands of Palestinians, including journalists and rival politicians, marched through Gaza City today for the funeral of a TV cameraman killed while covering a Israeli-Palestinian fighting.

Gaza erupted in the worst day of violence in a month, with at least 20 Palestinians and three Israeli soldiers dead, and putting Egyptian efforts to mediate a cease-fire in jeopardy.