Let's not lose our sense of proportion over this. We are getting a very one sided story based on sensationalised newspaper reports. The laws of this country concerning incest are based on religious dogma. Yes there are good scientific reasons why closely related people should not procreate but in this case the word rape is being bandied around so freely that it is colouring the issue. In some cultures this sort of behaviour is perfectly normal and accepted. Those girls may not have "encouraged" the father but they must have known that they could have called a halt to his activities at any time when they were in hospital having one of their many miscarriages. It may have started as rape (defined for this purpose as forced nonconsensual intercourse) but I cannot believe that there was no point at which these girls could not have told someone what was going on. That they may be in some way responsible for what has happened is not what I am saying but I do feel that they had it in their power to stop it and, for whatever reason, chose not to.
The man's actions were against the laws of this country and indeed many would argue against the rules of nature but ranting "Hang the b@st@rd" and "Chop his balls off" on this forum is not going to change what has happened.
Some concern for the girls involved and some means of dealing with the children unfortunate enough to have been born through this would be a better use of time.