The Egyptian Information Ministry tells CNN it's shutting down mobile phone networks ahead of tomorrow's "March of the Millions" demonstrations.
While it hasn't been established that the government is behind the failure of Egypt's last public Internet service provider, the report confirms widespread predictions that it would seek to cut off communications with the outside world before the demonstrations begin.
Many of those predictions got out to the rest of the world over a service Google set up over the weekend, which allows people to tweet by voice mail.
"No Internet connection is required" to use the service, Google said on its official blog Monday. "We hope that this will go some way to helping people in Egypt stay connected at this very difficult time. Our thoughts are with everyone there."
Many Egyptians are already taking advantage of the service, called Speak2Tweet; you can hear their tweets here. Presumably, traffic on that account will dwindle as cell networks go down overnight, but it shouldn't dry up completely, since the service works with landlines.