New details have emerged in the shocking story of a 32-year-old Connecticut man allegedly held captive in a single room by his father and stepmother for 20 years.

Kimberly Sullivan, 56, was arrested Wednesday, nearly a month after Waterbury police and firefighters responded to a fire the man lit inside the home Feb. 17.

While receiving medical care after the fire, the 32-year-old said he had been held captive in the home since he was 11 years old.

“I wanted my freedom,” he told first responders.

Police take Kimberly Sullivan into custody Wednesday to face charges of kidnapping and cruelty for allegedly holding her 32-year-old stepson captive for more than 20 years.  (Waterbury Police Department via AP)

Sullivan was arrested and is charged with assault in the first degree, kidnapping in the second degree, unlawful restraint in the first degree, cruelty to persons and reckless endangerment in the first degree.

Kimberly Sullivan was charged with kidnapping and cruelty for allegedly holding her 32-year-old stepson captive for more than 20 years.  (Waterbury Police Department via AP)

Her bond was set at $300,000, and she was later released by the Connecticut Department of Corrections.

Waterbury Police Chief Fernando Spagnolo called the suffering the man endured “heartbreaking and unimaginable,” noting the man has since been diagnosed with PTSD and depression.

While authorities are investigating how the man fell through the cracks as a child, Spagnolo told the AP police only had two interactions with the family, both in 2005.

Police responded to reports of a fire at a residence on 2 Blake St. in Waterbury, Conn. (Google Maps)

One call was a welfare check prompted by reports from classmates. Another was after the family filed a harassment complaint against school officials for reporting them to state child welfare officials, according to the report.

Officers noted there was no cause for concern, Spagnolo told the AP.

The Connecticut Department of Children and Families (DCF) said it is continuing to look for records of agency involvement, according to the report. However, unsubstantiated reports of neglect or abuse are erased five years after the conclusion of the investigation.

Kim Sullivan stands between her attorneys Jason Spilka, left, and Ioannis Kaloidis during her arraignment Wednesday at Waterbury Superior Court in Waterbury, Conn.  (Jim Shannon/Hearst Connecticut Media via AP, Pool)

“We are shocked and saddened for the victim and at the unspeakable conditions he endured,” the department said in a statement to the AP. “The now adult victim has shown incredible strength and resilience during this time of healing and our hearts go out to him.”

Tom Pannone, former principal of the defunct Barnard Elementary School in Waterbury, told NBC Connecticut administrators reported the alleged abuse to police and “not a damn thing was done.”

The Waterbury Police Department, Waterbury Public Schools and Connecticut DCF did not immediately respond to Fox News Digital’s request for comment Thursday.

The Associated Press contributed to this report.