Swiss Criminal Procedure Code
(Criminal Procedure Code, CrimPC)

The dir­ect­or of pro­ceed­ings shall ex of­fi­cio or at the re­quest of a party ar­range for the ex­pert re­port to be ad­ded to or im­proved by the same ex­pert wit­ness or shall ap­point ad­di­tion­al ex­pert wit­nesses if:

a.

the ex­pert re­port is in­com­plete or un­clear;

b.

two or more ex­pert wit­nesses di­verge con­sid­er­ably in their con­clu­sions; or

c.

there are doubts as to the ac­cur­acy of the ex­pert re­port.