A driver was fatally shot over the weekend in the seventh shooting on a Northern California freeway in recent months, authorities said Monday.

The California Highway Patrol said some of the shootings may be connected to a gang feud.

In the latest incident, a 40-year-old man was shot and killed Saturday about 1 a.m. while driving his Jeep west on Interstate 80.

The Jeep left the freeway and rolled several times down an embankment. Hill declined to release the victim's name.

He said investigators believe the victim was targeted but declined to say why.

Two people have been killed and five others wounded, including a toddler, in car-to-car shootings since Nov. 2 along the same stretch of Interstate 80 between Richmond and Pinole, the CHP says.

No arrests have been made. CHP investigators believe the shootings may be connected because they occurred in the same small area at roughly the same time of night. The methods also have been similar.

CHP spokesman Daniel Hill urged any possible witnesses to call (510) 622-4609. Witnesses can remain anonymous, he said.

"Even the smallest detail could help in cracking this open," he said.