Any crime that involves sexual intercourse or any other sexual act. The main crimes in this category are rape, assault by penetration, and sexual assault. There are also a range of offences governing sexual activities with children. Sex offenders are obliged to register with the police and tell police every time they move. Failure to register a change of address within 14 days is punishable on summary conviction with up to six months' imprisonment and a fine not exceeding the statutory maximum and on indictment with imprisonment for up to five years.