Swiss Civil Code

¹If the au­thor­ity is un­cer­tain as to wheth­er the de­ceased is sur­vived by heirs or wheth­er it is aware of all the heirs, the au­thor­ity must by ap­pro­pri­ate pub­lic means call on all per­sons with suc­ces­sion rights to come for­ward and claim them with­in one year.

²If no such per­son comes for­ward dur­ing this time and if no heirs are known to the au­thor­ity, the es­tate passes to the state au­thor­ity with right to suc­ceed, sub­ject to any ac­tion for re­cov­ery of in­her­it­ance.