Robbery: Valuables Left in Care with Relatives in Locked Box and Now Valuables Missing

Valuables left in care with relatives in locked box and now valuables missing with no evidence of break into the property

Can I involve the police? I did leave it in the care of the relatives. Do I have rights? I feel they may have taken them.

Robbery: Valuables Left in Care with Relatives in Locked Box and Now Valuables Missing