New Jersey's Supreme Court has heard arguments in a woman's appeal of her conviction for killing her 5-year-old son in 1991.

Michelle Lodzinski was convicted in 2016 in one of the state's most infamous cold cases.

Lodzinski, who was living in Florida when she was arrested in 2014, told police that her son Timothy Wiltsey disappeared while they were at a carnival but gave conflicting accounts.

The boy’s body was found a few miles away the following year, and a cause of death couldn't be established.

Lodzinski’s attorneys argued Tuesday that prosecutors never produced evidence that showed she purposely caused his death.