Updated

The Colorado Bureau of Investigation agents on Wednesday arrested a woman accused of illegally transferring the gun authorities say was used to kill Colorado's prisons chief.

Investigators believe Stevie Marie Vigil, 22, of Commerce City, legally bought the firearm from a licensed dealer in the Denver suburb of Englewood and transferred it to Evan Ebel, who was a felon who couldn't legally possess a firearm, the CBI said.

Ebel is suspected in the shooting deaths of Colorado Department of Corrections head Tom Clements on March 19 and of Nathan Leon, who was shot March 17 while working as a pizza delivery driver in the Denver area.

Ebel died after a shootout in Texas last week. El Paso County, Colo., sheriff's investigators have said the gun Ebel used in the shootout was the same weapon used to kill Clements when he answered the front door of his home.

The identity of the Englewood firearms dealer wasn't disclosed. Authorities described the dealer as "extremely cooperative" and said the dealer had no knowledge of Vigil's alleged actions after buying the gun.

Vigil was being held on one felony count of unlawful purchase of a firearm. Her bail was set at $25,000.

Records associated with her arrest have been sealed, and an El Paso County sheriff's office spokesman didn't immediately respond to an email seeking comment.