As Transformers star Shia LaBeouf rises to Hollywood’s A-list, his father has notoriety of another sort -- he’s a registered sex offender.

Jeffrey Craig LaBeouf spent time behind bars between 1981 and 1983, after being convicted of attempted rape, Star magazine has exclusively learned.

The conviction means that he is listed on the Megan's Law website, which gives people access to sex offenders across America.

"The Megan's Law website is 100% accurate," says Nick Pacilio, a spokesman for the Attorney General’s office. "If a person is on that website, they are a sex offender.”