FILE - In this Tuesday, April 2, 2019 file photo, Antonio Armstrong, Jr., center, listens to opening arguments by prosecutors inside 178 Criminal Courthouse in Houston. A judge has declared a mistrial in the case of the Texas teenager charged with capital murder in the shooting deaths of his mother and father, who was a standout linebacker for Texas A&M before a brief NFL career. Judge Kelli Johnson announced the mistrial Friday night, April 26, 2019, after a Harris County jury remained deadlocked for two days after hearing the weeks-long trial of 19-year-old Armstrong Jr. (Godofredo A. Vasquez/Houston Chronicle via AP, File)
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HOUSTON (AP) — A judge has declared a mistrial in the case of a Texas teenager charged with capital murder in the shooting deaths of his mother and father, who was a standout linebacker for Texas A&M before a brief NFL career.

Judge Kelli Johnson announced the mistrial Friday night after a Harris County jury remained deadlocked for two days after hearing the weeks-long trial of 19-year-old Antonio Armstrong Jr.

Prosecutors have claimed Armstrong shot Antonio and Dawn Armstrong inside their townhome in July 2016. They say the then 16-year-old told investigators an intruder shot his parents.

Harris County Assistant District Attorney John Brewer say prosecutors intend to bring Armstrong to trial again.

The elder Armstrong was a first-team All-American and played briefly for the San Francisco 49ers and Miami Dolphins.