Hi everyone!

This is my first time posting. So I took my rabbit out for a cruise and was just going around town when I engage the clutch to come to a stop and couldn't move the shifter down from 3rd. It is stuck there.. I used moderate force to see if it would budge, but alas nothing. It is stuck. It was running smooth, no grinding or anything when shifting etc. I am curious if it is the linkage arm? Due to the fact that the transmission seemed to be fine and running smoothly. I even disengaged the clutch and it killed the engine, but it just remains to be stuck in third without it budging. I am stumped. Anyone have any ideas?

Sorry I don't know if I posted in the right forum.