The Armenian prosecutor general's office initiated a criminal case for hampering the activity of MPs Armen Martirosyan, Zaruhi Postanjyan and Vartan Khachatryan, who observed the presidential election, and journalist Lusine Barseghyan against whom violence was used, said Sona Truzyan, a spokesperson for the prosecutor general's office.

"The results of the investigation will be announced later," she said, Novosti Armenia reports.