Siblings banned from community for allegedly sleeping with each other

A viral video shared Online shows a brother and sister being banished from their community (in Lude, Mbaise, Imo state) for allegedly sleeping with each other.
They were escorted out of the community with their properties and warned not to return.

They were then warned not to return and a voice is heard in the video explaining why the pair were being exiled: 
“The young man took his sister as a wife.”
“Any of them we see in Lude again will have themselves to blame, irrespective of what they came for,”.