LAKE COUNTY, Calif. — Bay Area authorities are reaching out to residents of several Northern California counties, including Lake, as they seek additional victims in a sex crimes case involving a Kelseyville man.

In August, the Brentwood Police Department in Contra Costa County initiated an investigation in which Matthew Pelton, 48, was accused of sex crimes involving children.

On Sept. 7, Pelton was indicted on federal manufacturing child pornography charges, officials said.

In addition to Lake County, Pelton also has been associated with the counties of Alameda, Contra Costa and Sacramento.

Based on information revealed in the investigation, Brentwood Police said there is evidence to suggest there may be more victims who have yet to come forward.

The Brentwood Police Department is requesting anyone with information or potential victims to contact Det. Talley at 925-809-7793.