The season for trapping thm is closed in NY. I strongly suggest contacting the DEC. Yeah I know I don't have much faith in them either but they might want to run some test on it. Fishers are just starting to make a comeback in NY the past years. I ran a small line for them but never got one. I have seen them bowhunting.

If you do trap it please use a live trap and take it somewhere else to release it. They have a slow reproduction cycle. Any type of fresh meat will bring it into a live trap. I would make sure the trap can't be tipped over though.