Andrew 'AJ' Freund, 5-year-old allegedly killed by parents, died from multiple blunt force injuries: Coroner

The body of Andrew "AJ" Freund was found in a shallow grave on Wednesday.

April 25, 2019, 5:10 PM

Andrew "AJ" Freund, the 5-year-old Illinois boy allegedly killed by his parents, died from head trauma due to multiple blunt force injuries, according to the McHenry County coroner's office.

AJ's parents, Andrew "Drew" Freund Sr. and Joann Cunningham, allegedly forced the boy to stay in a cold shower "for an extended period of time" and may have "struck" him, according to court documents.

Both parents have been charged with his murder, police said.

PHOTO: Andrew Freund Sr. in a police booking photo.
Andrew Freund Sr. in a police booking photo.
Crystal Lake Police
PHOTO: JoAnn Cunningham in a police booking photo.
JoAnn Cunningham in a police booking photo.
Crystal Lake Police

AJ, of Crystal Lake, was reported missing on April 18, prompting a massive, week-long search. The deadly assault occurred on or about April 15, according to court documents.

AJ's parents ultimately provided information that led investigators to his body, Crystal Lake Police Chief Jim Black said at a news conference on Wednesday.

PHOTO: This undated photo provided by the Crystal Lake, Ill., Police Department shows Andrew "AJ" Freund.
This undated photo provided by the Crystal Lake, Ill., Police Department shows Andrew "AJ" Freund.
Crystal Lake Police Department via AP

AJ's body was found on Wednesday in a shallow grave, wrapped in plastic, in a rural area near Woodstock, Illinois, Black said.

PHOTO: Mourners gather for a vigil outside the home of five-year-old Andrew "A.J." Freund on April 24, 2019 in Crystal Lake, Ill.
Mourners gather for a vigil outside the home of five-year-old Andrew "A.J." Freund on April 24, 2019 in Crystal Lake, Ill.
Scott Olson/Getty Images

Cunningham, 35, was charged with five counts of first-degree murder; four counts of aggravated battery; two counts of aggravated domestic battery; and one count of failure to report a missing or child death.

Freund, 60, was charged with five counts of first-degree murder; two counts of aggravated battery; one count of aggravated domestic battery; two counts of concealment of homicidal death; and one count of failure to report a missing or child death.

Both are due to be arraigned on Monday.

PHOTO: In this Wednesday, April 24, 2019 photo, community members in Crystal lake, Ill. hold a vigil in memory of 5-year-old Andrew "AJ" Freund.
In this Wednesday, April 24, 2019 photo, community members in Crystal lake, Ill. hold a vigil in memory of 5-year-old Andrew "AJ" Freund.
John Starks/Daily Herald via AP
PHOTO: In this Wednesday, April 24, 2019 photo, community members in Crystal lake, Ill., hold a vigil in memory of 5-year-old Andrew "AJ" Freund.
In this Wednesday, April 24, 2019 photo, community members in Crystal lake, Ill., hold a vigil in memory of 5-year-old Andrew "AJ" Freund.
John Starks/Daily Herald via AP

During the search for AJ, his younger brother was placed in a different home under a Department of Children and Family Services (DCFS) safety plan, a DCFS spokesman told ABC News earlier this week.

DCFS has been in contact with AJ's family since AJ was born with opiates in his system in October 2013, DCFS officials said.

In November 2013, AJ was taken into protective custody and placed in foster care, DCFS officials said. AJ was returned to his home in June 2015, according to the agency.

In March 2018, DCFS officials investigated allegations of neglect by AJ's parents; the allegations were unfounded, according to DCFS.

The last contact between DCFS and the family was in December 2018, after Cunningham called the cops to report that AJ's father stole her cellphone and medication. Responding officers found a bruise on one of the children, but were "unable to make a determination of abuse," and released the kids back to the parents, according to police reports. Child protection staffers investigated the allegations of abuse and neglect, but the allegations were unfounded, a DCFS spokesman said.

The news of AJ's death is "heartbreaking," Marc Smith, acting director of Illinois DCFS, said in a statement Wednesday.

"Our priority is the care and safety of Andrew's younger sibling," Smith said. "The Department is committed to conducting a comprehensive review of the entirety of our work with Andrew's family to understand our shortcomings and to be fully transparent with the public on any steps we are taking to address the issues."

ABC News' Whitney Lloyd and Alex Perez contributed to this report.