PORT SAID, Egypt (AP) — Thousands of mourners chanting for the downfall of Egypt’s president marched in funerals again Tuesday in the restive city of Port Said as the army chief warned the state could collapse if the latest political crisis drags on.

Army chief Abdel-Fattah el-Sissi’s warning, his first comments after six days of rioting and violence across much of the country, appeared aimed at pressuring Islamist President Mohammed Morsi in particular but also his opponents to find some common ground and the worst political crisis to hit Egypt since the ouster of autocrat Hosni Mubarak nearly two years ago.