It's somerhing I used to find quite a lot .. the only thing was the Police had usually asked me to attend and improve security after the cash had been stolen in a distraction burglary.
Older people often had a good few thousand in a handbag that was in a travel bag that was inside a suitcase that was in a wardrobe.
One thing I will point out is that the same old story usually followed ...
Prior to the burglary, they had confided in someone and they were the only person that knew about it .. the next thing, lo and behold, there was a burglary.
You need to tell him if he keeps the cash in the house, you can no longer be a friend and visit him.
It happened to me, wherby a regular customer suddenly showed me jewellry worth 10's of thousands she kept at home. She said that a carer had possibly stolen from her. Straight away I thought that "I am a regular visitor to her house" and if the carer stole then perhaps I could easily be under suspicion. I told the customer that unless she put the jewellry in a safety deposit box I wouldn't come back. I also told my employers and wrote a report about the incident.