Egyptian President Mohamed Morsi has declared a 30-day state of emergency and a night-time curfew in three cities along the Suez Canal that have seen deadly clashes in recent days.

In a televised address late on Sunday, Morsi said the emergency measures in Port Said, Ismailia and Suez would take effect on Monday from 9pm local time (1900 GMT) to 6am (0400 GMT), warning to take more action to stem the latest eruption of violence across much of the country.

Meanwhile, in Port Said, at least seven people were killed and 630 others injured on Sunday during the funerals of people killed at the weekend in clashes triggered by death sentences on supporters of a local football team.

Al Jazeera's Rawya Rageh reports from Port Said.