Deputy Constable Aaron Armstrong - Caldwell County Constable's Office - Precinct 3 - Texas

Deputy Constable Aaron Armstrong, of the Caldwell County Constable's Office, was the first law enforcement officer to be killed in the line of duty in 2026.

On January 4, 2026, at approximately 1:59 a.m., attempt to arrest a man at Club Rodeo at 9515 North Lamar Boulevard in Austin, Texas.  Deputy Constable Armstrong was in full uniform and had identified himself as a police officer.  He removed a man from the club who was causing a disturbance. 

The male pushed Deputy Armstrong and then fled into the parking lot.  The male remained in the parking lot with a group of people and began shouting at Deputy Armstrong.  When Deputy Armstrong attempted to arrest the man, the group prevented him from reaching the male.  The male pulled out a gun and fired multiple times at Deputy Armstrong.  Deputy Armstrong was able to return fire before he collapsed.  One of the males in the group then ran over Deputy Armstrong with a vehicle before fleeing the scene.  

Deputy Constable Armstrong was transported to the hospital, where he succumbed to his wounds.

The shooter, who had an extensive criminal record and was on probation, was apprehended, admitted his involvement, and was charged with capital murder. The driver was charged with assault of a peace officer.

Deputy Constable Armstrong had served with the Caldwell County Constable's Office - Precinct 3 for over one year and previously served with the Smithville Police Department. He is survived by his father, mother, and brother.  Our prayers and condolences to Deputy Constable Armstrong's family at home as well as with the Caldwell County Constable's Office.