© Kripo Trier
The German police issued the missing person's report for the Trier resident on Friday, which was shared by the University of Luxembourg in a post on social media.
According to police statement, 36-year-old Thomas Hoppenheit had last been in contact with friends and family on 15 March.
A search operation launched by the police has so far been unsuccessful. For this reason, the authorities decided to launch a public search.
In a social media post, the University of Luxembourg stated that Hoppenheit's friends and family as well as the university are "incredibly worried."
The 36-year-old is a doctoral researcher at the Centre for Contemporary and Digital History at the University of Luxembourg.
The police describe him as between 1.85 and 1.90 metres tall, with a dark blonde beard and glasses. Hoppenheimer also has dark blonde hair.
If you have any information related to this disappearance, you are asked to contact the Trier police by calling 0049 651/9779-2290.