How to Deal With a Neighbor's Affair

Neighbor asked me if I would look after their pets and their house while they were handling the death of his mother. They sent me an email stating they needed some additional time to handle his father's affair. Sent him an email asking what's going on, never got a response. Ended up dismantling part of our joint fence to allow his dogs to use their outdoor area. Their last name is extremely common and their Facebook profiles are private which gives me very little avenue to tackle this down.