The boyfriend of a missing postal worker who disappeared on her way to work in September is facing federal charges in her kidnapping.

Don Gaines, 30, is accused of abducting Gayla Roy and taking her from the Houston area to Louisiana to kill her or dispose of her body, according to the U.S. Attorney's Office.

The U.S. Attorney says Gaines allegedly choked Roy in her car until he thought she was dead.

Then, he allegedly drove the car with her body inside and she regained consciousness, according to the charges.

Gaines allegedly continued to drive Roy across state lines on I-10, before taking her into the woods.

The U.S. Attorney's Office says Gaines shot Roy in the head and then abandoned her body in the woods.