Matthias Rubisch, a 51-year-old German national, was last seen in Puerto Rico on September 21, 2020. He was an avid hiker and photographer who frequented the island’s natural areas. His vehicle was found undamaged near a national park, and his apartment showed no clues after he missed work, suggesting he went out and did not return.

Investigators note rough seas at the time and a tripod believed to be his was recovered on the rocks at a location he was known to visit for photography. That has led to the theory he may have been swept away by a wave while taking pictures, though he has not been located. The Policia de Puerto Rico and Interpol are handling the investigation; NamUs lists the case as MP75190 and DNA samples, including a profile from Germany and DNA from a toothbrush, are on file.

Anyone who knew Matthias, saw him in Puerto Rico around September 21, 2020, or has information about his hiking or photography routes is asked to come forward.