MADISON, Wis. - The man shot dead during a bank robbery by a security guard in plainclothes at an east Madison bank in March is believed to be the man behind a string of robberies in Dane County across four months.
Madison police said Tuesday that the security guard who shot 35-year-old Luis Marty Narvaez of South Milwaukee at the Chase Bank on Milwaukee Street on March 1 will not be charged.
"Based upon the totality of circumstances taking place, the district attorney's office does not believe criminal culpability - on the part of the security guard - can be proven beyond a reasonable doubt," Madison police spokesman Joel DeSpain said.
"It was clearly articulated by the security guard that he did believe there was a threat to a potential customer," said Dane County District Attorney Ismael Ozanne.
Ozanne said that if the guard had used deadly force only to protect bank assets, such as money, the guard may have been charged, since Wisconsin law does not shield someone from prosecution for the sole purpose of defending property.
Documents show the security guard, who relied on his military training from previous service in the United States Marine Corps, did not yell a command at Narvaez before shooting him once in the back.
He told detectives he feared that if he addressed the robber, he would've taken a nearby customer hostage. Narvaez was shot in the back from about 10 feet away. Assistant Dane County DA Matthew Moeser said the guard, identified only by the initials "CD," thought Narvaez had a weapon because he kept his hands hidden in his pocket.
The security guard was hired just a month before the incident, following a previous armed robbery at the bank.
During the course of the investigation, the Madison and Middleton police departments linked Narvaez to six other bank robberies, including one at the same Chase Bank he was killed at. Approximately $14,000 was taken during the heists.
In some cases, the robber wore a "Deadpool" Halloween mask.
He appeared to have a weapon, but it was never shown. When Narvaez was shot, he was unarmed.
Authorities said these are the robberies connected to Narvaez:
- Nov. 6, 2017: Associated Bank, 2420 Allen Blvd., Middleton
- Nov. 22, 2017: Associated Bank, 2420 Allen Blvd., Middleton
- Dec. 4, 2017: Chase Bank, 4513 Milwaukee St.
- Dec. 22, 2017: Old National Bank, 333 S. Westfield Road
- Jan. 22: Associated Bank, 1720 Monroe St.
- Feb. 22: Associated Bank, 1720 Monroe St.
- March 1: Chase Bank, 4513 Milwaukee St.
Police said elements used to tie the robberies together included DNA evidence, similar clothing and shoes, similar commands and style of robbery, similar physical description and a similar vehicle description.
"In a lot of these cases it's similar clothing, similar shoes, similar get away car, it's how the robberies went down, the words he used," DeSpain said.
As a result of joint investigations, Madison and Middleton police will be closing the robbery investigations that Narvaez is believed to have committed.
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