[GTW] Detective: Cannot arrest suspect if the suspect is also a police officer

Im working as a detective. The problem is that i cannot arrest the suspect because he is also working as a detective.

I have been to many lots to find the same sim each time. He is the only one that fits the clues.
I tried on different days at work too thinking that i was mistaken. The truth is that he is the only one that i could arrest but the game wont let me. (there is no interaction about Arrest or asking if he saw the suspect)

Here are some pictures i took while i was trying to arrest him. (my game is in french but the sim looks and traits fit all the clues) and like if that wasn't enough, he is the only sim that spawn on the lot when i go to arrest the suspect.

I had luck one time when i travel to the lot and i tried to arrest someone else so i could close the case but guess what, that wasn't the good suspect....