Yes. Interception of communication is possible in the extent available to national authorities involved in criminal proceedings pursuant to Section 88 of Code of Criminal Procedure (CPC), i.e. in case of criminal proceedings concerning:
a) crimes, for which the Criminal Code prescribes a sentence of imprisonment with the upper limit of 8 or more years,
b) crimes stipulated in Section 88a (1) of CPC, related to public tenders, abuse of official powers and economic competition, namely: Machinations in Insolvency Proceedings (Section 226 of Criminal Code), Breach of Regulations on Rules of Economic Competition (Section 248 (1) e, (2) to (4) of CC), Arranging Advantage in Commission of Public Contract, Public Tender and Public Auction (Section 256 of CC), Machinations in Commission of Public Contract and Public Tender (Section 257 of CC), Machinations in Public Auction (Section 258 of CC), Abuse of Power of Public Official (Section 329 of CC), False Accusation (Section 345 (3) to (5) of CC), Perjury (Section 346 (3) to (5) of CC) and False Translation (Section 347 (3) to (5) of CC),
c) crimes, prosecution of which is stipulated in international treaties binding the Czech Republic.