A South Korean lawmaker known for criticism of the Samsung conglomerate has forfeited his seat in parliament after the Supreme Court ruled he violated communications laws by publishing incriminating wiretaps of conversations between Samsung officials on the Internet.

South Korea’s top court upheld a lower court’s conviction of lawmaker Roh Hoe-chan and a suspended prison sentence. He published transcripts of conversations between an aide to Samsung Electronics Co. chairman Lee Kun-hee and Lee’s brother-in-law that were recorded by the national intelligence agency. The conviction disqualifies Roh from being a lawmaker.