The so-called Caylee's Law -- born after the death of Orlando 2-year-old Caylee Anthony in 2008 -- was signed by Florida Gov. Rick Scott on Friday, according to multiple media reports.
Effective Oct. 1, the law will make it a third-degree felony for anyone who lies to a law-enforcement officer conducting a missing-person investigation involving a child 16 years of age or younger who is found to have suffered great bodily harm, permanent disability, permanent disfigurement, or death, according to the state Senate's online site.
Previously, the measure unanimously passed by a 40-0 vote in the Florida Senate and by a 113-0 vote in the state House of Representatives.
The bill that became the law was introduced following the highly publicized trial of Caylee's mother, Casey Anthony.
Last July, a jury found Casey Anthony not guilty of first-degree murder, aggravated manslaughter of a child, and aggravated child abuse, but guilty of four misdemeanor counts of providing false information to a law-enforcement officer.
Casey Anthony was then sentenced to four years in prison, the maximum sentence for lying to police as a first-degree misdemeanor. With credit for time served, she was released from custody shortly thereafter.
Had Caylee's Law been in effect at the time, Casey Anthony could have faced as many as 20 years in prison and a $20,000 fine, according to a News Service of Florida article carried by the Orlando Sentinel.