[Updated at 6:40 p.m. ET, 12:40 a.m. in Egypt]
Al Jazeera has offered more details of the reported raid on its Egypt station.
It says its live Egypt service was taken off air during a live broadcast. "Security forces stormed the building and arrested the presenter, guests and producers," a post on Al Jazeera's website said.
Earlier, CNN's Ivan Watson reported from Cairo that at least three pro-Muslim Brotherhood TV stations in Egypt also appear to have been shut down.
Meanwhile, it's after midnight in Cairo, and the pro-Morsy and anti-Morsy rallies in Cairo still are going strong. On CNN International, CNN's Reza Sayah is reporting from the anti-Morsy demonstration at Cairo's Tahrir Square, and fireworks still are going off.
[Updated at 6:25 p.m. ET, 12:25 a.m. in Egypt]
Saudi King Abdullah has sent a message of congratulations to Adly Mansour, the Egyptian constitutional court leader who will temporarily replace Morsy, according to the Saudi Press Association.
"I congratulate you on assuming the leadership of Egypt at this critical point of its history. By doing so, I appeal to Allah Almighty to help you to shoulder the responsibility laid on your shoulder to achieve the hopes of our sisterly people of the Arab Republic of Egypt," King Abdullah said in the statement.
[Updated at 5:57 p.m. ET, 11:57 p.m. in Egypt]
The offices of Al Jazeera's Egyptian television channel have been raided by security forces, who have detained some of the staff, the network has reported.
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.