The grand jury charged that Lodzinski "did purposely or knowingly kill Timothy Wiltsey, or did purposely or knowingly inflict serious bodily injury upon Timothy Wiltsey, resulting in his death . . . "
Lodzinski reported Timothy missing from a Memorial Day carnival in Sayreville on May 25, 1991.
She said she went to get a soda, and when she turned around he was gone. Her report prompted a massive search.
Nearly a year later, his partial remains were found in a remote part of an Edison industrial park.
Officials did nor provide a possible motive for the slaying.
According to nj.com, Lodzinski subsequently told police her son was abducted first by two men, one armed with a knife and then later said he was taken by two men and a woman,
Alan Rockoff, the Middlesex County prosecutor when Timmy disappeared, said he wasn't surprised at Lodzinski's arrest.
"We didn't have sufficient evidence at the time to pull the trigger," Rockoff told The Associated Press. "There was no direct smoking gun here."
Rockoff, 81, said detectives never stopped working the case and did as much as they could to solve it.
"Hopefully now, there's a possibility of closure," Rockoff said. "Justice works slowly, but works surely."
Lodzinski ran into other legal troubles after her son's death.
She surfaced in Michigan in January 1994 and said two men claiming to be FBI agents had abducted her at gunpoint outside her apartment building, forced her into a black SUV and drove her to Detroit, where they let her out.
She pleaded guilty in 1995 to making false statements to the FBI and fraudulently using the agency's seal. She was sentenced to probation.
In 1997, Lodzinski was arrested and charged with stealing a computer from her former employer. She pleaded guilty to a theft charge and was pregnant in 1998 when a federal judge sentenced her to house arrest after she admitted she committed a crime while on probation.
This article contains material from the Associated Press