The first part: "A case of human teleportation, which is still not fully understood."
The next case of teleportation, which was registered on the territory of the USSR, happened in 1989 in one of the sanatoriums. Then the person who experienced this strange phenomenon on herself was an elderly woman - a resident of one of the sanatoriums, Lydia.
Once she habitually walked through the forest in search of mushrooms. Suddenly, the woman felt a prick in her heart and reached for the medicine, which was always with her. Looking up, she saw an old abandoned church, which was located a few kilometers from the place where Lydia was strolling.
Thus, she was able to move in space, and the pain in her heart became evidence of her transfer. If she got there at the snap of her fingers, then she had to walk back to the sanatorium, which took the woman several hours.
History knows about a large number of similar cases, when people disappeared without a trace, appearing in days or months, while not understanding what happened to them. This phenomenon is currently being studied by many experts, but today the nature of this phenomenon cannot be identified.