Suspect in Keokuk shooting now charged with second-degree murder

KEOKUK (WGEM) - Keokuk Police reported Thursday that a Keokuk man, previously charged with firearms violations following a July shooting that resulted in a death, has now been charged with second-degree murder.

Police stated Matthew Thomas Miller, 27, of Keokuk, was arrested just after 10 a.m. Thursday.

The charge stems from a July 28, 2024, shooting that resulted in the death of Colby Deck, 27.

According to police, Miller initially stated that he fired a single shot from ground level near the vehicle Miller claimed to be in after Deck used his vehicle to hit Miller’s vehicle.

Police said there were no shell casings discovered in that area; however, a shell casing was found in Miller’s vehicle.

Lab testing indicated that the casing was not fired by the firearm Miller claimed he used in the incident.

According to police, further investigation revealed a second-story window open and a single shell casing in a rain gutter adjacent to the open window.

Police sent the casing to the lab for testing. The testing indicated that this casing was fired from the firearm Miller used during the incident.

Police said two witnesses were with Deck in his vehicle. Statements from them indicated that neither saw Miller in or around the vehicle he claimed to be in when they heard the single gunshot.

Police said the investigation shows probable cause that Miller fired a single gunshot from the second-story window, striking Deck in his chest.

Police stated this act was intentional and resulted in the death of Deck without justification.

RELATED:

• Keokuk early morning shooting prompts an investigation
• Keokuk man charged with firearms violations following fatal July shooting