The Barksdales are suspected of slaying 72-year-old Frank Bligh (pictured) in April in Tuscon, Arizona.
After the alleged killing, the couple fled to upstate NY, where U.S. Marshals with help from a SWAT team apprehended them.
The Barksdales were on the run for more than two weeks after escaping custody in Utah while en route to Arizona. A third inmate in the van wanted no part of the escape.
The Barksdales then drove the van to Vernon, Arizona, where they obtained a pickup truck from an acquaintance and likely got help from additional people, Gonzales said. Then they "abandoned the locked prison van with the three occupants inside". Based on tips they had received, the marshals believed the Barksdales were hiding out somewhere east of Snowflake, Ariz., an isolated enclave where dozens have gone to live off the grid, some of whom believe they suffer from environmental illnesses that make it impossible for them to live in populated areas among pollution and technology.
The reward for information leading to Susan Barksdale's arrest was set at $10,000.
Authorities say Susan had pretended to have an intestinal issue while she was in the back of the privately operated prison transport van, and forced the two security guards to stop. The Pima County Sheriff's Department has said that it has suspended the use of the transport company, STS, pending a review of the escape.
They also are facing charges of first-degree burglary, arson of an occupied structure, criminal damage and auto theft.
The fugitives allegedly stole $30 from the guards and, through a friend, acquired another vehicle in Arizona - a red GMC Sierra pickup truck - to resume their attempted getaway with at least a six- to seven-hour head start before authorities were alerted to look for them.