In the old days, coups started by seizing TV and radio stations. Now they crimp the internet at 3am

And yes, that's what happened in Myanmar this week

Something nasty happened to the internet in Myanmar at around 3am local time (2030 UTC Sunday). Traffic dipped markedly. And by sunup the reason for the situation became clear: the nation’s military had decided to reclaim power after a brief period of democracy, and presumably restricted internet access to make it harder to organize resistance.…

from The Register