Second victim dies in shooting over weed deal in Sonoma County

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A second man died Tuesday after he and two others were shot over the weekend in a marijuana deal that went south, officials said.

John Jessie Mariana, a 28-year-old Guerneville man, succumbed to his injuries after three days in a hospital with critical gunshot wounds. Another man, 36-year-old Nathan Proto of Sebastopol, died shortly after the Saturday night gunfire, officials said.

A third victim, an unidentified woman, remains alive and in a hospital.

Investigators are working to piece together what led to the triple shooting at a residence on the 5000 block of Highway 116 South in Sebastopol.

“They don't know if money or marijuana was taken from the home but there is evidence to suggest that this case will involve the sale of marijuana,” the Sonoma County Sheriff’s Office said in a statement.

No arrests have been made.

Kimberly Veklerov is a San Francisco Chronicle staff writer. Email: kveklerov@sfchronicle.com Twitter: @kveklerov