Michael McKee's charges are upgraded to four counts of aggravated murder in the deaths of his ex-wife, Monique Tepe, and her husband, Spencer.

The indictment specifies that the firearm used by McKee was equipped with a muffler or suppressor, commonly referred to as a "silencer." McKee also faces an additional charge of aggravated burglary for allegedly breaking into the Tepe home to commit the murders.

Police say McKee is the person captured on video walking in the alley behind the Tepe home between 2 a.m. and 5 a.m. the morning of the murders.

Using license plate reader data and surveillance technology, detectives track McKee's vehicle traveling approximately 325 miles from Illinois to Columbus, Ohio, arriving shortly before the murders and leaving soon after.

Investigators have yet to mention a motive for the murders, labeling the killings as "domestic violence-related."

McKee and Monique were married for a short period of time and have been divorced since 2017, but a clerical error caused the divorce case to receive a new hearing date, appearing on the docket for this past June and showing a trial date for September, just three months before the murders.

When court officials determine it is a clerical error, the court date for September is cancelled.​

Joining Nancy Grace:

• Darryl Cohen - Former Assistant District Attorney (Fulton County, Georgia) Former Assistant State Attorney (Florida), Defense Attorney, Cohen, Cooper, Estep, & Allen; Facebook: "Darryl B Cohen"/X: @DarrylBCohen
• Caryn Stark -  Forensic Psychologist, Renowned TV and Radio Trauma Expert and Consultant; Instagram: carynpsych, FB: Caryn Stark Private Practice
• Dan Murphy - Former NYPD Detective-Sergeant (conducted hundreds of interrogations), Co-Host of "Gold Shields" Podcast, and Author: “Workplace Safety: Establishing an Effective Violence Prevention Program”
• Joseph Scott Morgan - Professor of Forensics: Jacksonville State University, Author of "Blood Beneath My Feet," and Host: "Body Bags with Joseph Scott Morgan;" Instagram @JoScottForensic
• Susan Hendricks - Journalist, Author of  “Down the Hill: My Descent into the Double Murder in Delphi;" IG @susan_hendricks X @SusanHendicks
• Dave Mack - Investigative Reporter, 'Crime Stories'

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