I saw this episode of "People & Power" on Aj Jazeera news last month. Just managed to find the video on YouTube. It's a short 30 minute documentary but wow it's messed up. Some of these women are burnt alive because of these accusations (fortunately clips aren't shown).
I've gotta say, accusing people of something without any evidence does remind me of something very similar But this is what happens when even the people in charge believe evidence is unnecessary.