Nirav Tolia, who runs a social networking website that espouses neighbourhood safety and community, is facing civil and criminal charges.
Inspector Knacker of the San Mateo County yard fingered the collar of the Nextdoor CEO on a charge of leaving the scene of a highway accident that a driver says he caused.
Executive recruiter Patrice Motley has also filed a civil lawsuit against Tolia in San Francisco Superior Court, her attorney Joseph Brent said.
According to the civil lawsuit Motley lost control of her car after Tolia swerved into her lane last August. Her Honda del Sol spun across two lanes and crashed into the median on Highway 101 south of San Francisco.
Apparently Tolia drove his wife and child home in their black BMW X5 SUV without stopping or calling 911, the lawsuit stated.
Fortunately, a civil minded person, ironically the same sort of person who is a fan of Nextdoor, wrote down his license plate number and gave it to authorities.
Tolia told coppers that he was shaken and did not call 911 because he was in shock.
In a statement he said he was saddened by the other driver's injuries and deeply troubled by the whole incident. He said he was taking these allegations extremely seriously and will continue to fully cooperate with the authorities.
Tolia said his car never touched Motley's car and that officials never issued him with a citation, and he has had no communication with police since August.
This is not the first time Tolia has been in trouble. A decade ago he resigned as chief operating officer of Shopping.com after the company learned he had lied about the status of his Stanford University degree and previous work experience.
Nextdoor has raised just over $100 million from backers including Benchmark, Kleiner Perkins Caufield & Byers and Tiger Global. Its last funding, a $60 million round in October, valued the company at more than $500 million.