Stalker co-worker

I have a stalker co-worker who has now reported me to HR because I make him feel uncomfortable after my “accusations” now I’m being brought in to have a meeting with him, HR and management.

I originally reported my coworker for coming to my second job and sitting and idling the company car in my other job’s parking lot. My supervsior told me he is allowed to do that on his break. I told them it made me uncomfortable. My supervisor told me then I should call the police if he does that and I feel uncomfortable.

After reporting him showing up to my job, another coworker reported to me and said the same stalking coworker was asking where I was because he wanted to “mess with me” He proceeded to wait by the doorway to wait for me to

Come in but I never entered the building and went off to my community tasks.

I reported the report my coworker had give to me. My supervisor and HR said they “talked to him and cant tell me the discipline they took”

We have been working in separate buildings but I was sent over to his building for some tasks so now he’s reporting my presence is making him uncomfortable because of my “accusations”

Please help me without how I should prepare for this meeting and what is the future of this.