UNDATED (CNN) -- A Colorado woman has been arrested in connection with the investigation into the death of the state's prison chief. Police accuse the woman of buying the gun the suspected shooter, Even Ebel, used in the killing. Ebel, a convicted felon, was not able to buy a gun legally.
Stevie Marie Vigil is under arrest for allegedly providing the gun to Ebel.
In a so-called "straw purchase," Vigil is accused of legally buying a gun from this gun store in a Denver suburb and then illegally transferring it to Ebel.
No word on how Ebel and Vigil are connected, but police say she is not known to have ties to the gang Ebel joined in prison.
No comment from her attorney, but investigators say that gun was used in the killings of pizza delivery man Nate Leon and Colorado prison chief Tom Clements and then used in a shootout with police in Texas after a high speed car chase. Sheriff David Walker with the Wise County, TX Sheriff's Office says, "Once the suspect was struck by the 18-wheeler, he exited the vehicle with a firearm and engaged our deputies in a fire fight. None of the deputies were hit by any of the suspect's shots."
Investigators are also focusing on Ebel's car, telling CNN the Cadillac was bought from a woman in aurora Colorado. Present at the sale were Ebel and other men.
Police say they have identified the men and are interviewing them. Police still have no motive for the murders, but Ebel was a member of a white supremacist prison gang called the two-elevens. Investigators want to know if the murder of Tom Clements may have been a hit, with orders coming from inside the walls of one of Colorado's prisons or jails.
Undersheriff Paula Presley with the El Paso County, CO Sheriff's Office says, "We will continue to investigate this case to determine what the motivation was, whether it is linked to the prison system, what would have sent this individual to focus on Tom Clements."
And CNN has learned that when Ebel was released from prison on Jan, 28, he was fitted with an ankle bracelet to monitor his movements.
Police believe he removed that bracelet to hide his movements from authorities.
And now, word from the Department of Corrections that, while in prison, Evan Ebel violated prison rules 28 times, including threatening to kill a guard.