332 persons, who in 1987 received sanctions for sexual offences, were observed in freedom for five years, or until recidivism at an earlier stage. 82 (24.7%) committed new crimes during the observation period. Sexual offences comprised about 1/3 (8.4%) of the crimes committed. Rapists had the highest degree of recidivism. There was no significant difference between the various subgroups of sexual offenders (sexual offences against minors, rapists and other offenders) with regard to the frequency of recidivism into sexual offences. Registered sanctions for sexual offences before 1987, and sexual abuse and obscene conduct toward minors registered i 1987, were found to be significantly correlated to sexual recidivism after 1987. Problems regarding the evaluation of the effects of treatment to forestall recidivism into sexual crimes are discussed.