BRENTWOOD -- A 52-year-old Brentwood man has been charged with molesting a 10-year-old boy in the man's home and at a community pool over a six-year period starting in 1993.

The Contra Costa District Attorney's Office has charged Gordon Thomas Blake with 15 felony counts of sexual molestation, Brentwood police said. The alleged molestations began in 1993 and continued until 1999, authorities said.

Police began the investigation in January when the victim came forward. Police say there could be other victims because Blake had contact with many children at the community pool at 180 Cottonwood Common in Brentwood during those years.

Blake was arrested Tuesday and is being held on $625,000 bail. Police are encouraging anyone with additional information about this case to call investigators at 925-809-7759.

Reach Kristin J. Bender at kbender@bayareanewsgroup.com. Follow her at Twitter.com/kjbender.