The focus of the investigation, opposition politician Andranik Tevanyan, is a candidate on tycoon Gagik Tsarukyan’s electoral list.
Gagik Tsarukyan’s Prosperous Armenia is believed to be among Pashinyan’s Civil Contract’s main challengers.
In turn, Karapetyan accused Pashinyan of being behind the publication.
Gagik Tsarukyan, also an opposition figure, had earlier dubbed his signature campaign platform a ‘political and civic Noah’s Ark’.
Prime Minister Nikol Pashinyan has accused the opposition of intending to ‘revise’ the peace settlement with Azerbaijan, saying it would lead to war.
Armenia is set to hold parliamentary elections in June.
Armenian Parliamentary Speaker Alen Simonyan’s comments follow similar remarks made recently by Prime Minister Nikol Pashinyan.
