Jan Koura published a study in Intelligence and National Security

A study by Jan Koura called “A prominent spy: Mehdi Ben Barka, Czechoslovak intelligence, and Eastern Bloc Espionage in the Third World during the Cold War“ was published in peer-reviewed impacted journal Intelligence and National Security.
Abstract:
The 1965 disappearance of Mehdi Ben Barka in Paris, the catalyst of one of the greatest political scandals in the history of post-war France, is still shrouded in mystery several decades later. Newly declassified documents from Czech archives have shed light on the final years of the Moroccan politician’s life, revealing that Ben Barka had cooperated with Czechoslovak intelligence from 1961 until his abduction. The aim of this study is to assess the nature of this partnership and demonstrate the activities, methods, and aims of Czechoslovak intelligence in the Third World during the 1960s.