Seyyed Mohammad Beheshti, one of the figures close to Ayatollah Khomeini during the Islamic Revolution and the head of the judicial system in 1359 and 1360, chose the last name Mehrayin. Before the revolution, his last name was Dawoodabadi, although he was also known by the names of Dawoodi, Mamed Jodo, and Mamed Motori. In 1348, through Ali Akbar Nabavi Nouri, one of the senior figures of the People’s Mojahedin Organization, he was connected with this organization and held combat classes for its members, and shortly after, he officially became a member of the People’s Mojahedin Organization at the invitation of Mohammad Hanifnejad, the then leader of the organization. The kidnapping operation of Shahram Pahlavinia took place on the 1st of Mehr 1350, but it was kept hidden until December 26, that is, until Parviz Sabeti announced the incident in a famous press conference where the hall was full of confiscated weapons. In this regard, Mohammad Mehraayin told Hizb Mutalfa website: “The operation was at the current Taleghani-Qarni intersection where his company was located. My duty was to take Shahram and put him in the car to take Shahram to Algeria from the airport.