Pfc. James Andrew Gonzalez pleaded guilty Friday in a Fort Hood military trial. He could be sentenced to more than 22 years' confinement and a dishonorable discharge.
The sentencing phase starts later Friday.
Gonzalez's brother had said the FBI told the family the Army received a July 13 ransom call. The caller said Gonzalez had been abducted and demanded $100,000 and the withdrawal of U.S. troops from the border. Gonzalez was arrested July 22 in Laredo during a traffic stop.