Body of Nobel winner's wife found at Illinois landfill
https://edition.cnn.com/2018/03/14/us/nobel-winner-wife-dead/index.html
I thought that elderly people approaching death should be monitored carefully. Especially, when they got dimentia.
They are likely to stroll somewhere without clear destination nor motivation.
If they are unable to walk by themselves, they have less possibility to walk somewhere. But, if they have sound body, they are potential to go somewhere without notifying anybody.