Additionally, at least three pro-Muslim Brotherhood TV stations in Egypt appear to have been shut down Wednesday, CNN's Ivan Watson reported from Cairo.
[Updated at 5:46 p.m. ET, 11:46 p.m. in Egypt]
Reports of new clashes between Morsy's supporters and security forces and/or anti-Morsy demonstrators are coming in.
At least four people were killed Wednesday in confrontations between Morsy supporters and security forces in the northern Egyptian city of Marsa Matrouh, according to the state-run Ahram newspaper website, citing its correspondent based in the city.
Also, clashes between Morsy supporters and the opposition were reported Wednesday in Kafr El-Sheikh in northern Egypt, with dozens reportedly injured, according to Ahram. At least 43 Morsy supporters have been arrested, Ahram reported.
This comes about a day after 23 people reportedly died in clashes at Cairo University. That number came from Ahram, citing medical sources. The university clashes started Tuesday night.
[Updated at 5:40 p.m. ET, 11:40 p.m. in Egypt]
It's one defiant speech after another at the large pro-Morsy rally in Cairo, CNN's Ben Wedeman reports from near the site.
One speaker has called on supporters of the Muslim Brotherhood, the Islamist movement that propelled Morsy to his election last year, to hold demonstrations and sit-ins across the country. Speakers continue to stress that Morsy is Egypt's legitimate leader because he was elected. Demonstrators also have heard an audio message from Morsy, who rejected notions that he's been deposed (see 5:16 entry for a Morsy message that was aired on Al Jazeera).
Morsy won 52% of the vote last year, but CNN's Kyle Almond notes that Morsy's opponents complained that his government wasn't inclusive.
Morsy has also been accused of authoritarianism, forcing his conservative agenda through edicts and a narrow majority. He has squared off against Egypt's judiciary, the media, the police and even artists.
"The Muslim Brotherhood has not recognized that it has to take into account the 48% that didn't vote for it," CNN's Fareed Zakaria told Wolf Blitzer on Tuesday. "There are many people who feel that the constitution was rammed down the throats of a lot of Egyptians, that it contains within it many illiberal characteristics, things that are kind of the Muslim Brotherhood's Islamic agenda written into the basic framework of laws."
[Updated at 5:16 p.m. ET, 11:16 p.m. in Egypt]
Wherever Morsy is, he doesn't appear to have accepted his ouster. He says, in a taped statement just aired on Al Jazeera, that he is still the country's legitimate president.
He also said he remains open to negotiate and to engage in dialogue.
Stressing that he was democratically elected, he called on his supporters to continue their peaceful demonstrations but avoid infighting and bloodshed.
[Updated at 5:11 p.m. ET, 11:11 p.m. in Egypt]
The U.S. Embassy in Cairo has ordered the mandatory evacuation of all nonessential personnel, CNN's Jill Dougherty reports, citing a senior administration official, who spoke on condition of anonymity.
[Updated at 5:08 p.m. ET, 11:08 p.m. in Egypt]
A few hours before Morsy's ouster was announced, soldiers and police were deployed to certain areas of the city. CNN's Ivan Watson, reporting from Cairo, said these forces generally surrounded areas where supporters of Morsy and the Muslim Brotherhood were gathered.
To recap the demonstration scenes: Anti-Morsy demonstrators are celebrating in Cairo's Tahrir Square, but there is a substantial pro-Morsy crowd elsewhere in the city.
Some of those protesters oppose Morsy but also oppose pushing from power a democratically elected leader, said Gehad El-Haddad, a spokesman for the Muslim Brotherhood, which helped boost Morsy to power last year. "Under no circumstances will we ever accept a military-backed coup," he said.
[Updated at 4:42 p.m. ET, 10:42 p.m. in Egypt]
The chairman of the U.S. House Foreign Affairs Committee has weighed in:
"It is unfortunate that Morsy did not heed popular demands for early elections after a year of his incompetent leadership and attempting a power grab for the Muslim Brotherhood," U.S. Rep. Ed Royce, R-California, said in an e-mailed statement. "Morsy was an obstacle to the constitutional democracy most Egyptians wanted.