COBB – A Wednesday morning crash left three people injured, with two of them transported via helicopter to Sonoma County for medical treatment.

The crash occurred shortly before 9 a.m. on Highway 175 west of Estates Drive, according to California Highway Patrol Officer Steve Tanguay.

Those injured included Phyllis Sullivan, 56, and Jennifer McConlogue, 32, both of Cobb, and 51-year-old Malcolm Campbell of Middletown, Tanguay said.

Sullivan was driving her 2007 Mitsubishi Eclipse at an unknown speed eastbound on Highway 175, Tanguay said. Campbell was riding as Sullivan's passenger.

Tanguay said Sullivan was traveling downhill through a curve in the roadway when, for an unknown reason, she allowed her vehicle to go to the left and cross over the painted solid double yellow lines and enter the westbound lane of traffic.

McConlogue was driving her 2004 Dodge Stratus westbound when Sullivan's Mitsubishi crossed over the double yellow lines directly in front of her. Tanguay said the two vehicles collided head-on.

REACH air ambulance took both McConlogue and Campbell to Santa Rosa Memorial Hospital, Tanguay said. McConlogue suffered major injuries; the degree of Campbell's injuries were not specified.

Tanguay said Sullivan was transported to St. Helena Hospital-Clearlake by ambulance.

This collision is still under investigation by Officer Steve Curtis, Tanguay said.