The dark wizard, Voldemort, was sentenced to a short term in Azkaban for his and his son’s assault upon a Ministry of Magic official. This incident occurred in the year 1996, shortly after Voldemort had been defeated by Harry Potter.
Voldemort and his son, Draco Malfoy, were both found guilty of the assault and were sentenced to a short term in Azkaban. This was the first time that Voldemort had been in Azkaban since his initial imprisonment in the early 1970s.
The time spent in Azkaban had a profound effect on Voldemort’s health. He was already weakened from his battle with Harry Potter, and the conditions in Azkaban only served to further weaken him. He was not able to recover from the effects of his time in Azkaban, and he died soon after returning home.
Voldemort’s time in Azkaban was brief, but it had a lasting impact on his health. It is likely that the conditions in Azkaban, combined with his weakened state, contributed to his death. It is a testament to the power of Azkaban that even a powerful dark wizard like Voldemort was not able to withstand its effects.