Nearly all arrests are for "suspicion" of some crime -- until you have plead guilty in court[1] it's always suspicion. And anyone has a right to make a citizen's arrest, while many security guards have limited police powers just within the private property they guard. With any of these, they can only hold you long enough to hand you over to police.

[1] Or, I suppose, found guilty by a judge. But that only happens with a miniscule portion of our legal cases in the US courts -- it is ignorable as an obscure special case.