A Novato man who was shot and killed during a confrontation with Sonoma County sheriff's deputies had methamphetamine and marijuana in his system when he died Feb. 28, according to toxicology results released this week by law enforcement officials.

The findings are consistent with the narrative relayed by the alleged kidnapping victim of Richard Shreckengaust, 37, who had driven the woman against her will from San Rafael to Sonoma County after the two acquaintances smoked marijuana together, authorities said.

The victim became frightened when Shreckengaust began acting strangely and talked of having explosives in his car, and pleaded with him to let her out of the vehicle, authorities said.

At some point she began texting a friend who alerted police to her plight, prompting Sonoma County sheriff's deputies to get involved and launching a pursuit from Santa Rosa to Guerneville, where Shreckengaust crashed.

The victim said Shreckengaust smoked a pipe containing what she thought was methamphetamine during the pursuit. She tried several times to bail out of the moving car, and finally got free when the vehicle crashed into an embankment.

Deputies were trying to persuade Shreckengaust to exit the vehicle when one of them reportedly thought he had reached for a weapon and began shooting, hitting Shreckengaust twice, officials said.