The attorney for the jailed guard, Kenneth Konias Jr., of Dravosburg, did not immediately return a call for comment on the decision by Allegheny County District Attorney Stephen Zappala Jr.
Zappala had previously said he might not seek the death penalty in order to deprive Konias of the notoriety that sometimes attaches to death penalty defendants, especially since Konias will spend life in prison if he's convicted of first- or second-degree murder.
"I think the community is better served ... by him having his day in court and having him disappear as quickly as possible," Zappala said at a news conference a couple days after Konias' arrest April 24 in Pompano Beach, Fla.
It could take 18 months for a death penalty case to go to trial, compared to six months if the death penalty was not a factor
"If we're successful in our case, this guy's never leaving the joint," Zappala said.
Konias is charged with murdering the other guard, 31-year-old Michael Haines, before stealing the money from the Garda Cash Logistics vehicle on Feb. 28.
Zappala spokesman Mike Manko said Tuesday the prosecutor met with Haines' family a couple of weeks ago seeking input on whether to pursue the death penalty, but otherwise didn't comment on the decision. A spokeswoman for Haines' family did not immediately return a request for comment.
Authorities believe Konias was driving the armored car when he opened a door behind the driver's seat and fatally shot Haines, who was in the middle of the truck's three compartments. Zappala has also said the physical evidence doesn't support what Zappala considers Konias' self-serving claim that he only shot Haines after Haines aimed a gun at him during some kind of argument.
Haines was shot in the back of the head and there was no evidence in the truck or in the way Haines clothes appeared that day to suggest the men struggled before Haines was shot, Zappala said.
The FBI and Pittsburgh homicide detectives have gone to Florida and otherwise spent the weeks since the robbery trying to trace Konias' movements prior to his arrest and trace the stolen money.
Konias reportedly confided in a prostitute in Florida who then told a male acquaintance about Konias' role in the robbery, and that man contacted Pittsburgh police the night before Konias was arrested.
At least $1.1 million has been recovered in Florida along with nearly $300,000 in Pennsylvania. The FBI has been trying to determine if more money is stashed somewhere or whether Konias spent it all, though Konias may have given a large sum to a cab driver who investigators said may have been trying to help Konias escape to an island in the Caribbean.