A Santa Rosa man was arrested on suspicion of felony child endangerment and driving under the influence, authorities said.

Fernando Tzinzun, 39, was pulled over Wednesday about 10 p.m. on Highway 101 because his registration was expired, said CHPOfficer Jon Sloat.

Tzinzun could not provide a driver's license or proof of insurance, Sloat said. The officer saw that a young boy was in the front seat without a seat belt and also noticed "signs of intoxication," Sloat said.

Tzinzun failed a field sobriety test and was arrested. He also may face charges of driving without a license, providing false registration and failing to properly restrain a child.

The boy, who was 6 years old, was released to his mother, Sloat said.

Earlier Wednesday, David Navarro, 32, was arrested on suspicion of driving under the influence after he stopped his car on Petrified Forest Road and offered another motorist $20 to drive him home.

The motorist, who had previously noticed Navarro's car swerving in front of him, took his keys and called 911, Sloat said.

An officer had to help Navarro, of Santa Rosa, out of his car and could not give him a sobriety test because he couldn't walk, Sloat said.