SAN ANTONIO (AP) — The former stepfather of a 12-year-old girl killed in Vermont last year has pleaded guilty to transportation of child pornography.

The plea by Raymond Gagnon was accepted by U.S. District Judge Xavier Rodriguez in San Antonio on Monday. Gagnon faces up to 20 years in prison when he is sentenced in July. He still faces a related child pornography possession charge in Alabama, where he lived before moving to San Antonio in April 2007.

Authorities searched Gagnon's home after his former stepdaughter, Brooke Bennett, disappeared in Vermont last summer. She was found dead a week later. Her uncle, Michael Jacques, has been charged in the killing. Police said Jacques had called Gagnon several times when the girl was first reported missing.