Mystery car buried in Silicon Valley mansion garden fully excavated

Authorities said no body was found, after cadaver dogs had made slight' notifications of possible human remains

Crews fully excavated a car that police said was buried in the backyard of a northern California mansion 30 years ago and found no human remains, authorities said on Monday.

The convertible Mercedes Benz filled with bags of unused concrete was discovered last week by landscapers in the affluent town of Atherton in Silicon Valley. Cadaver dogs brought to the scene made slight" notifications of possible human remains on three separate occasions, police said in a statement.