Concerns have been raised within Germany over the alleged treatment of an Iranian human rights violator in Hanover.

The individual in question, Hossein-Ali Nayeri, reportedly received medical care at the International Neuroscience Institute (INI), a private neurosurgical clinic in Hanover headed by prominent Iranian-born neurosurgeon Prof. Madjid Samii.

Nayeri was involved in the summary trial and execution of thousands of Iranian prisoners during the 1980s, which led to widespread condemnation. His medical treatment in Germany was revealed by German media outlet Presseportal reported last week on Nayeri’s admission to the INI.

Reacting to the news, Norbert Röttgen, a member of the German Bundestag, or federal parliament, expressed his concerns in a tweet on Thursday, calling Nayeri a “mass murderer” and stating that, "if he is here and leaves again, it will be a first-class scandal."

Volker Beck, the president of the German-Israeli Society, took immediate action after being informed of Nayeri's presence in Germany. On July 7, he notified Germany’s Federal Public Prosecutor, the Foreign Office, and the Federal Interior Ministry, urging them to initiate criminal prosecution measures against Nayeri.

"This must come to an end," he asserted, referencing a previous case involving another Iranian judge, Mahmoud Hashemi Shahroudi, who received treatment at the same clinic in Hanover back in 2018.

The allegations also sparked outrage among Iranian opponents of the Islamic Republic, who accused the INI of deleting Nayeri’s medical records.

Bild, Germany’s highest circulating newspaper, reported that the expunging of Nayeri's medical records appeared to be an attempt to avoid a new scandal against the Iranian regime; however, Prof. Samii, INI’s director, denied this allegation.