Lithuanian Prison Department (LKD) accumulates persons sentenced to arrest penalties, statistics from 2021, updated annually, received from prison institutions. Set includes item number used to separate relevant data on a year-by-year basis. Item numbers can be more accurate with more numbers separated by dots. Between these data include offences, expulsion from prison nature, age groups of convicted persons. Data mentioned in the collection measured in units of convicted persons or in years, months, and in days. For convenience, the serial numbers of the set are also used.