Are Personal Belongings stored after Murder case?

Hi all- I am going to provide brief context before asking my questions.

Roughly 7 years ago, there was unfortunately a murder tragedy in NH involving my partner’s parents/family (victims and assailant) shortly before we started dating. It happened in a condo that one of his parents was living in, and of course the entire place became a crime scene. My fiancé has told me that unfortunately, he was only given 2 hours to go into the condo to take what he wanted/ what he could carry out to keep. He often tells me about things he has from his childhood that he couldn’t bring or go back for because it “was part of a crime scene” and it breaks my heart.

I would have thought that the contents of the condo would’ve gone to direct next of kin like him (he is an only child, was over 18 at the time) or his living grandparents, but he said that nothing like that happened as everything was seized. Even after the trial, family was not contacted about retrieving any other contents of the condo.

My questions: Would the police station still have those things, or would they have been thrown out / discarded by the condo company? Would I be able to call that department to find out?

I understand it’s been a long time, but everytime we talk about it, I just feel so frustrated that all of the contents of the place he grew up in are gone/lost. It breaks my heart to hear stories about things like his childhood collections, photos, or art pieces that he didn’t think to grab during the most traumatic time of his life.

Thank you in advance to anyone who reads this or can give any insight. 💙