UPDATE On Sunday's Tragic Hit-and-Run In Napa County

A woman in her mid- to late 50s was found injured in a rural area of state Highway 29 in Napa County early this morning and pronounced dead as she was transported to a hospital, according to the Napa County Sheriff’s Office.

Deputies and the California Highway Patrol responded to a report of a woman lying in the roadway in the 400 block of Highway 29 near Old Lawley Toll Road around 4:45 a.m.

[Previous: Fatal Sunday Morning Hit-And-Run Reported On Hwy 29.]

The woman was found suffering from major injuries on a southbound lane, sheriff’s officials said. She was airlifted to Santa Rosa Memorial Hospital but succumbed to her injuries while en route, according to sheriff’s officials.

The woman was found in a rural area where there were few pedestrians and investigators have not found a vehicle associated with the incident, sheriff’s officials said.

The sheriff’s office is investigating the circumstances of what happened to the woman as a possible homicide with the county’s homicide task force and CHP.

The CHP issued a Sig-alert at 6:28 a.m. closing Highway 29 in both directions between Tubbs Lane and Robert Louis Stevenson State Park.

There is no estimated time of when the roadway will reopen. Emergency responders from the Calistoga Fire Department, Napa County fire and Cal Fire also responded to the incident.

Anyone with information on the incident is asked to call Napa County sheriff’s Detective Chris Pacheco at (707) 253-4591.

--Bay City News