Evidence cards only give information about their particular type of evidence. So a crime card only tells you if the crime is correct or adjacent, it says nothing about the suspects or locations.
We didn't get that from the rules.
Here's what the English rules state (my bold):
"This action allows you to investigate one particular aspect of your
case. You select one Evidence card from those on display. The player
to your right must indicate how accurate this Evidence card is. If the
Evidence card matches one of the Case cards he or she holds then
they will tell you to place a disc on the matching tile. If the tile in
question is in an adjacent location to the tile on the Evidence card
then they will tell you to place a cube on the tile."
The rule is vague about the situation the OP described. Your solution -- that an Evidence card can only be used to locate tiles of the same type (suspect, crime, location) makes sense, but it's not clear in the rules.
That changes everything.