LITTLETON, Colo. (CBS4) – A man who shot and killed a man who robbed him and attempted to steal his vehicle won’t be charged.

Pete Weir, district attorney for Jefferson County, announced the decision on Wednesday.

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(credit: Jefferson County Sheriff's Office)

(credit: Jefferson County Sheriff’s Office)

The shooting occurred at a residence in the 5400 block of South Taft Court on Jan. 24 just after 9 a.m. and involved homeowner Anthony Mott and two other males. Mott shot 38-year-old David Martinez who was attempting to flee the robbery in Mott’s vehicle.

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“It is standard procedure for law enforcement to conduct an investigation into any death resulting from a gunshot wound,” Weir said in a statement. “The Jefferson County Sheriff’s Office did a very thorough investigation in this case. Following their presentation of the evidence regarding the shooting of Mr. Martinez, the decision was made that criminal charges were not warranted.”

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David Ernest Mascarenas (credit: Jeffco Sheriff)

David Ernest Mascarenas (credit: Jeffco Sheriff)

The second suspect in the robbery, David Ernest Mascarenas, 54, was arrested a few days later for his alleged role in the robbery. He was captured on surveillance photos allegedly using credit cards that were stolen from Mott.