Police in Woodridge, Illinois, recovered a human body from a shallow pond on the outskirts of the suburb on Feb. 16, and DNA testing later confirmed the remains belonged to 42‑year‑old Mark Sadelski, who had been reported missing from his Downers Grove home on Jan. 28.
Background
Sadelski, a software engineer, was last seen leaving his residence around 9 p.m. on Jan. 28, after a brief visit from a neighbor. He failed to appear for work the next day, prompting his wife to file a missing‑person report with the Downers Grove Police Department. Search teams, volunteers, and K‑9 units combed nearby streets, parks, and waterways for nearly three weeks, but no trace was found.
Friends described Sadelski as a quiet, routine‑oriented man with no known enemies or recent disputes. Authorities noted that his personal belongings, including his wallet and cell phone, remained at the home, and no signs of forced entry or struggle were observed.
The Investigation
The Woodridge Police Department, in coordination with the Downers Grove Police, the Illinois State Police, and the FBI's Missing Persons Unit, oversaw the recovery and forensic analysis of the body. The Illinois State Police Crime Lab performed DNA profiling, which matched samples provided by Sadelski’s sister, confirming his identity. The case remains open as a possible homicide, and investigators are reviewing surveillance footage from nearby streets and interviewing acquaintances for leads.
Key Takeaways
- Mark Sadelski was reported missing on Jan. 28 after failing to appear for work.
- A body was recovered from a Woodridge pond on Feb. 16 and later identified through DNA testing.
- The investigation is being led by Woodridge Police, Downers Grove PD, Illinois State Police, and the FBI.
- No foul play has been publicly confirmed; authorities are conducting a full autopsy to determine cause of death.
What's Next
The medical examiner’s office will conduct an autopsy to establish the cause and manner of death, after which the case may be re‑classified if evidence of homicide emerges. Police have asked anyone with information about Sadelski’s disappearance or the pond area on the relevant dates to contact the Woodridge Police Department. Updates will be provided as the investigation progresses.