MARTINEZ — Police arrested a 44-year-old yard duty supervisor for the Mt. Diablo school district on suspicion she had inappropriate contact with children online.

Martinez police took Janis Thompson into custody Tuesday at her home after receiving two tips in the past six months from the Sheridan Police Department in Wyoming and the National Center for Missing and Exploited Children, according to a news release.

Thompson is accused of contacting boys through an Xbox 360 live gaming system, obtaining their phone numbers and then initiating sexual conversations.

Police said she contacted two Wyoming victims numerous times and gained their trust before the crimes occurred. The victims had no connection to each other.

No other victims were identified, a sergeant said.

The Mt. Diablo school district notified parents of students at Hidden Valley Elementary School in Martinez about the arrest, Superintendent Steven Lawrence said. Thompson worked as a noon yard duty supervisor at the campus, he said.

"The Martinez Police Department and other law enforcement agencies have conducted an extensive investigation and have not identified any Hidden Valley Elementary School or Mt. Diablo Unified School District students as potential victims," the district told parents in a written statement. "District administration has taken appropriate action to keep all our students safe. This does not mean we should not stay vigilant."


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The message urged parents to speak to their children about uncomfortable interactions they may have had with adults and about safe use of the Internet. It also advised parents to monitor children's "virtual communications and interactions."

Police collected evidence at Thompson's home. Anyone with information regarding the case can contact Detective Michael Estanol at 925-372-3452 or mestanol@cityofmartinez.org.

Staff writer Roman Gokhman contributed to this story.