The prosecutor's appeal is dismissed.

1. The gist of the grounds for appeal is that the defendant was notified by the person in charge of the correctional institution at the time of release that he/she was not obliged to register personal information and changed matters within 20 days, and the notice received when submitting basic personal information is not timely stated, and the period for submitting changes in personal information can be confirmed by asking the competent police station about the change in personal information, etc., there are justifiable grounds for mistake in the law of the defendant;

Although the court below acquitted the defendant, the court below erred by misapprehending the legal principles, which affected the conclusion of the judgment.

2. The following circumstances, which were duly admitted and examined by the lower court based on the evidence duly admitted and examined by the lower court, namely, the Defendant was present at the protection observation office on the day following the release, and asked the person in charge of personal information to inquire about the registration period for change of personal information, and the person in charge of personal information may report by 30 days after the date of release by mistake until August 19, 2016.

The defendant, after making a move-in report with a new domicile, sought the time period for registering changes in personal information by telephone from the person in charge of the second time, and received the same answer, and the defendant first asked about the person in charge of the protection observation office because he did not know at the time and time to calculate personal information from the time of the registration period because he did not know that the person in charge of the protection observation office should calculate personal information from the time of the registration period because he did not know that the person in charge of the registration of personal information should receive personal information from the time of the registration period, and it is difficult to expect that the person in charge of the protection observation office should confirm the correct law by other means of inquiry, regardless of the erroneous answer by the person in charge of the protection observation office.