"Those listed in the top 15 of the US Marshals are typically career criminals with a history of violence and whose alleged offenses pose a significant threat to public safety," said US Marshal Marshal. District of Arizona, David Gonzales. "Blane Barksdale has the dubious distinction of fulfilling this requirement. "
The couple escaped custody at the end of August when he was extradited for fire, burglary and murder in connection with the death of a Vietnam veteran in Tuscon, Arizona. They used a medical emergency to get the guards to park and then threw them into the back of the van, Gonzales said.
During their escape, they may have been helped by white supremacists, Gonzales said at a press conference Monday.
"Someone like Blane in prison – with both locals – with both a state prison and a federal prison, would be associated with Aryan Brothers, gangs of white supremacy." so is the type of individuals we think we can help, "said Gonzales.
In April, the police reacted to a fire that provoked an explosion at the home of Vietnam veteran Frank Bligh.
But he and his vehicle were untraceable, and investigators uncovered evidence that the fire had been unleashed intentionally and that Bligh had been killed, Tucson police said.
On May 1, an arrest warrant was issued against the Barksdales for first-degree murder, first-degree burglary, arson and car theft, police said.
But the Barksdales had fled the state, sparking research at the national level. They were found in Henrietta, a suburb of Rochester, New York, and arrested without incident on May 24.
Bligh's brother said the victim was good friends with Susan Barksdale, but that she had changed since meeting her new husband.
CNN has not been able to identify a lawyer for the couple.
Eric Levenson, Dan Simon, and CNN's Giovanna Van Leeuwen contributed to this story.