SANTA ROSA (CBS SF) — Deputies are investigating a shooting in Forestville, a census-designated place in Sonoma County, that left one man dead and another gravely wounded Friday night, sheriff’s officials said.

Google Street View

Intersection of River Road and Trenton Healdsburg Road in Sonoma County. (Google Street View)

Around 6:40 p.m., Sonoma County sheriff’s deputies and the Henry One helicopter responded to a call about a shooting at River Road and Trenton Healdsburg Road, Sheriff’s Sgt. Spencer Crum said.

READ MORE: COVID Reopening: Uber Expects Employees At The Office At Least 3 Days A Week

Helicopter crew members spotted two men down, Crum said. One was dead and the other had life-threatening injuries. The helicopter flew the injured man to the hospital, where he is on life support and not expected to survive, Crum said.

READ MORE: COVID: Few 'Breakthrough' Infections Among Vaccinated In Sonoma County No Cause For Alarm, Experts Say

Both men are in their 40s, Crum said. Their names aren’t being released at present because their families haven’t been told yet.

There is a marijuana grow near the place where the shooting took place and the sheriff’s office suspects the deaths were marijuana-related, Crum said.

MORE NEWS: Curry's 42, Green's Triple-Double Lead Warriors Past Thunder In Rout

Detectives have been working through the night and into this morning to figure out what happened and identify a suspect, Crum said.