Two drivers were killed Sunday in a head-on crash on Bodega Avenue just west of Petaluma, CHP officials said.

The crash occurred about 10:25 a.m. near Thomas Lane west of Middle Two Rock Road, about a mile outside Petaluma city limits. A westbound silver Ford minivan collided with an eastbound tan GMC pickup, Sgt. Joshua Kolstad said.

The drivers — a man and a woman — were pronounced dead at the crash site. The CHP did not release the identities of the drivers Sunday.

The minivan was carrying two dogs. One was found dead, while the other dog was taken by an animal control officer to be reunited with its family, Kolstad said.

“The cause of the collision is still under investigation at this time,” he said Sunday at the crash site.

No other details were available. CHP officials could not be reached Sunday night.

The crash closed down a section of the two-lane road for several hours as authorities waited for tow trucks and a coroner to arrive.

In addition to the CHP, the Wilmar Volunteer Fire Department responded to the crash.

The fire agency reminded residents on social media to drive safely on that busy stretch of road.

You can reach Staff Writer Julie Johnson at 707-521-5220 or julie.johnson@pressdemocrat.com. On Twitter @jjpressdem.