Replying to Stolen shit. should i call him out?

at a party at my house over the summer someone stole 100 dollars, a signed pete olenick obermeyer poster, and my brothers ski pants. a ski buddy of mine who ive been skiinn with for like 4 years was there that night, but we dont usually hang out outside of skiing though.  if i recall correctly he was the only skier at my house that night. this kid loves stealing shit too, but why the fuck would he steal from me? should i call him out? i just dont want to think hed do something like that but its the only logical explanation. and what if im wrong or he denies it??