From NPR's Soraya Sarhaddi Nelson and The Associated Press, both in Cairo:
State TV in Egypt is reporting that Prime Minister Essam Sharaf and his cabinet have submitted their resignations to the nation's military council.
It isn't known, Soraya says, whether the interim government's resignations will be accepted.
That news comes, of course, after three days of protests and violent crackdowns on dissent in Cairo's Tahrir Square.
We'll add to this post as the story develops.