Swiss Criminal Procedure Code

¹The pub­lic pro­sec­utor and, in the en­quir­ies, the po­lice may cov­ertly ob­serve per­sons and prop­erty in gen­er­ally ac­cess­ible loc­a­tions and make im­age or sound re­cord­ings while do­ing so if:

a.

there is reas­on to be­lieve on the basis of spe­cif­ic in­form­a­tion that felon­ies or mis­de­mean­ours have been com­mit­ted; and

b.

the en­quir­ies would oth­er­wise have no pro­spect of suc­cess or be made un­reas­on­ably com­plic­ated.

²Where ob­ser­va­tion activ­it­ies ordered by the po­lice have been con­duc­ted for one month, their con­tinu­ation re­quires au­thor­isa­tion by the pub­lic pro­sec­utor.