Since the military staged a coup on February 1 and ousted leader Aung San Suu Kyi from power, it has imposed several internet shutdowns.

The last two nights have seen the internet in Myanmar go down from 1:00 am to 9:00 am, and Wednesday was no different.

"Confirmed: #Myanmar is in the midst of a near-total internet shutdown for the third night in a row amid anti-coup protests," tweeted NetBlocks, a Britain-based group that monitors internet outages around the world.

It said internet connectivity had dropped to just 19 percent of ordinary levels.

The blackouts have left the public on edge, and neighbourhood watch groups have cropped up across Myanmar to stand guard against arbitrary arrests of protesters.

More than 420 people have been arrested since the coup, according to Assistance Association of Political Prisoners monitoring group.