Kunowski's first arrest for rape was in 1973, when he was barely 17 years old. At the time, believing the teenager was unlikely to relapse, the court sentenced him to only three years. However, not long after his release, Kunowski was brought to trial again, this time for theft. He was given a
suspended sentence. During this time, he was a suspect in the disappearance of 14-year-old student Agnieszka Grzybicka, who mysteriously vanished after finishing her lessons at one of the primary schools in
Mława. Despite a joint effort by local resident and the police to locate her, Grzybicka was never found, leading some to believe that she had been abducted and killed. As part of the inquiry, both Kunowski and
Leszek Pękalski were questioned, but neither was charged in the case. Kunowski was arrested again in 1995 on charges of raping two girls. After remaining in custody for two years, he complained of an obstructed artery, which was confirmed during a medical examination. As a result, the courts issued that he temporarily released for treatment. However, Kunowski, who had sold his flat in Mława the previous year, used the money to buy himself a fake passport and flee to England. ==Murder of Katerina Koneva==