Fugitives Casey Cole White and Vicky White apparently exchanged vows in jail or while on the run from the law.
Casey referred to corrections officer Vicky White as his "wife" when he was pulled from the wrecked Cadillac that overturned during a high speed chase in Evanston, Indiana on Monday.
Vicky White died on Tuesday from a self-inflicted gunshot wound.
Casey and Vicky disappeared on April 29 after she took him from the Lauderdale County Jail in Florence, Alabama.
She told jail colleagues she was taking the 6-ft-9 murder suspect to the courthouse for a mental evaluation. But officials later learned there was no such appointment.
Her patrol car was found abandoned near the jail. Officials initially believed her life was in danger and that she had been abducted by the career criminal.
Vicky had been with the department for 25 years. She was due to retire the day after she helped Casey escape from jail.
Law enforcement officials caught up with the pair at a hotel in Evanston, and they tried to flee.
While on the phone with police, Vicky said she had a gun to her head and her finger was on the trigger.
Authorities rammed the Cadillac and it overturned into a ditch.
"When we were taking Casey White into custody, upon his surrender he said, "Help my wife, she just shot herself," Commander Deputy U.S. Marshal Chad Hunt told ABC News' "Good Morning America" on Tuesday.
Hunt said there was no evidence the two were married.