Alta man sentenced to 10 years for violent home invasion, impersonation

Trenton Miller of Altoona was sentenced to a maximum of 10 years in prison after a violent home invasion in Alta that began with a claim he was an undercover officer and ended with a victim injured and a handgun pointed at his head.

The Buena Vista County Attorney’s Office said the sentence was handed down April 20 in Iowa District Court. Miller, 26, pleaded guilty to willful injury and going armed with intent. Other charges were dismissed as part of the plea agreement, and Judge Carl Petersen ordered the prison terms to run concurrently.

Court filings said the incident unfolded late on Feb. 20, 2026, around 11:35 p.m. in the 300 block of West Seventh Street in Alta. Miller allegedly told people inside the residence that he was an undercover Storm Lake police officer and said he was there to retrieve property for his ex-wife. Investigators said that cover was used to gain entry before the situation turned violent.

Authorities alleged Miller pointed a handgun at the victim’s head, ordered the victim to lie face down in an upstairs hallway and placed his boot on the victim’s back. Court documents say he cocked the gun, demanded a cellphone valued at less than $300 and struck the victim in the face, causing facial injuries.

Miller was booked into the Buena Vista County Jail in the early morning hours of Feb. 21 and remained held on a $100,000 bond during the early stages of the case. A judge, Kristi Busse, signed off on the search warrant for Miller’s vehicle. Investigators later recovered a pink iPhone, a black phone case, a brown wallet and a nine-millimeter Taurus handgun with ammunition, including hollow-point bullets, from a red 2004 Chevy Trailblazer.

The initial arrest charges were broader and included first-degree robbery, fifth-degree theft, impersonating a public official or patrol officer, assault while displaying a dangerous weapon, willful injury and going armed with intent. The final sentence left Miller convicted on the violent counts that remained after the plea deal, rather than on the more serious robbery charge that had been part of the original arrest.

For Buena Vista County, the case underscores how quickly a false claim of police authority can escalate into a terrifying armed assault inside a home. The 10-year sentence shows local prosecutors and judges are treating that blend of impersonation, threat and physical violence as a serious public-safety offense, not a simple deception case.