During a 2007 remodeling of the presbyterian Church in Covina, workers uncovered several disturbing images of child pornography,

A subsequent FBI investigation led to a registered sex offender who was living at working at an auto repair shop in town.

The sex offender, Richard Welton, 47, is now behind bars in federal custody.

Here’s the FBI docs from the case:

Welton has a long criminal history that includes making obscene phone calls from churches claiming to have abducted a young girl.