Parliamentary group of the National Movement for Stability and Progress (NMSP), part of the ruling coalition, demanded the Parliamentary Ethics Committee to investigate statements of the opposition Rule of Law and Justice leader Yane Yanev against NMSP leader Simeon Saxe-Coburg.

Yanev said that Saxe-Coburg collaborated with the communist-era secret services and the Russian KGB. Saxe-Coburg’s weakness for gambling helped services recruit him, Yanev said.

NMSP parliamentary group head Anelia Mingova said that Yanev’s statement was “slander.”

“It is inadmissible for a member of Parliament to slander colleagues,” she said as quoted by Focus news agency.

NMSP would make no compromises, she said.