URGENT: Egypt has shut off the internet

I just received a call from a friend in Cairo (I won't say who it is now because he's a prominent activist) telling me neither his DSL nor his USB internet service is working. I've just checked with two other friends in different parts of Cairo and their internet is not working either.

This just happened 10 minutes ago — and perhaps not uncoincidentally just after AP TV posted a video of a man being shot.

Will update with more info. The ISPs being used by my friends are TEDATA, Vodafone, and Egynet.