Length of registration is determined by the substantially equivalent offense in Illinois (either 10 year registration or lifetime).
You can either report the information to the local law enforcement agency where the sex offender registers and request they investigate or you may contact the Illinois State Police Sex Offender Registration Unit at 217/785-0653.
A sex offender or sexual predator, who has never previously been required to register under the Illinois Sex Offender Registration Act, has a duty to register if the person has been convicted of any felony offense after July 1, 2011.
A person who previously was required to register under this Act for a period of 10 years and successfully completed that registration period has a duty to register if: (i) the person has been convicted of any felony offense after July 1, 2011, and (ii) the offense for which the 10 year registration was served currently requires a registration period of more than 10 years.
Public Act 97-0578 explains further retroactive registration requirements regarding sexual predator offenses, and all offenses which have an exact effective date.
Section 10 of the Illinois Sex Offender Management Board Act states "sexually motivated" means one or more of the facts of the underlying offense indicates conduct that is of a sexual nature or that shows an intent to engage in behavior of a sexual nature.
It is unlawful for a child sex offender to be present in any school building or property, or loiter within 500 feet of school property without the permission of the superintendent or school board, or in the case of a private school the principal unless the child sex offender is a parent of a child at that school, and the parent is on school grounds for one of the following reasons: As of January 1, 2011, it is unlawful for a sexual predator or a child sex offender to knowingly be present in any public park building or on the real property comprising any public park.
The definition of public park includes a park, forest preserve, or conservation area under the jurisdiction of the state or unit of local government.
An offender who is convicted of a violation of the Illinois Sex Offender Registration Act on or after July 1, 2005 is required to register every 90 days for the duration of their registration.
Those offenders adjudicated as Sexually Dangerous or Sexually Violent, must register every 90 days for natural life.