CAIRO — Egyptians are converging on Cairo's central Tahrir Square in response to a call for a so-called million-man march as protests against the country's military rulers enter a fourth day.

Thousands of Egyptian protesters have been camping out on the square and clashing with police trying to force them to leave.

They hoisted a giant Egyptian flag and chanted slogans on Tuesday, evidence that an offer of resignation by the civilian Cabinet the day before has failed to quell the spreading unrest.

Egypt's state-TV says three people were killed overnight in the eastern city of Ismailia, raising the overall death toll from the protests to 29.