Amy Baker, charged by Mason County officials Friday in connection with the disposal of 3-year-old Marcus Fiesel’s body, surrendered to Clermont County authorities later that same day.

Warrants were issued for David Carroll and Baker by Mason County authorities charging them with tampering with physical evidence after Baker said she helped Carroll dispose of the toddler’s body after he died while in the care of Carroll and his wife, Liz Carroll.

Baker is expected to appear in Clermont County court today for an extradition hearing. She could be remanded to custody of Mason County during those court proceedings.

Baker had received immunity in Hamilton and Clermont counties in Ohio for her testimony against the Carrolls, Fiesel’s foster parents. Her testimony played a major role in the conviction of Liz Carroll, who was sentenced to 54 years in prison for her part in the toddler’s death. David Carroll later accepted a plea deal of 16 years to life in prison for his involvement in the child’s murder.

Fiesel was first reported missing by Liz Carroll in August when she said he went missing from a Cincinnati area park. A four-day search for the boy involved scores of volunteers along with emergency personnel. Later, Liz Carroll admitted before a grand jury Fiesel was wrapped in a blanket and packing tape and left in a closet in the couple’s Clermont County home while the family went to a family reunion in Kentucky. She said he was dead two days later when the family returned from the reunion.

According to Maysville police, “the criminal complaints allege that on or about Aug. 7, 2006, the defendants disposed of Marcus Fiesel’s remains by throwing same into the Ohio River from the William Harsha Bridge … for the purposes of destroying or concealing evidence in official proceedings relating to the homicide of the said Marcus Fiesel.”

Baker had admitted in open testimony she and David Carroll threw the burnt remains of Fiesel’s body in the Ohio River. Additionally, David Carroll also placed blame on Baker stating “then we burned (Marcus’ body) in a chimney in Brown County, Amy Baker and I.”

David Carroll said those remains left after the attempt to burn the body were put into a pillowcase and thrown into the Ohio River.

According to Mason County Attorney John Estill, Mason County had promised Clermont County prosecutors not to interfere with the murder investigation. Since both Carrolls have been convicted, however, the “issue is moot,” he later said. Despite that, Clermont County officials have expressed displeasure with Mason County’s actions in the case with Clermont County Assistant Prosecutor Daniel Breyer saying he was appalled by the turn of events.

Baker was booked into jail Friday and released on $50,000 bond.

In a related development, the Brown County chimney where the body of Marcus Fiesel was burned was torn down by volunteers Saturday and the stones used to construct a memorial on the site for the slain child.