text:  Residents of Gaza City say there's been another day of intense Israeli military activity. On Tuesday, tanks advanced further into the districts of Ashajaya, Sabra and Tal al-Hawa, where residents had reported on Monday some of the fiercest fighting since the start of the conflict. The Israeli army said it had killed dozens of Hamas militants in close quarters combat. Indirect talks on a ceasefire are reported to be taking place in Cairo and Qatar.