LOOMIS (CBS13) — The Placer County Sheriff’s Office confirmed Friday afternoon that the Loomis couple killed in their upscale home this week was stabbed.

Kathy Lynch, 67, and her longtime boyfriend, Gerald Upholt, 80, were found dead Monday at their home on Lake Forest Drive. The couple was well known in Sacramento political circles. Both were lobbyists who worked on behalf of crime victims.

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Lynch’s son, Dennis, is accused of killing the pair and has since been arrested. Placer County deputies shot him after they say he pointed a gun, which was later determined to be real, at deputies outside of the home. The 19-year-old is expected to make a full recovery.

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Dennis Lynch, 19 (credit: Placer County Sheriff’s Office)

Dennis is facing murder charges and is being held without bail in the Placer County Jail. He was arraigned on Wednesday and is expected back in court on April 13.

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A motive for the killings has not yet been determined.