Apparently the victim kept their bitcoin information in a small safe that could be carried away in a bag.
Home burglers will usually go for the common items found in common areas: look for safes in closets, look for guns in nightstands, look for jewelery in both of those and dressers, then get out. Even if you have a home alarm, they can get in, check those areas, grab what they find there, and be out before your local police can respond.
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