Vallejo police say the vertebrae left at a police station, is not human. The reason it was left there remains unknown.
Vallejo police said Tuesday that a mysterious vertebrae left on the station doorstep Sunday is not human.
Why and how it got there is still a mystery.
But the Solano County Coroner's determination that the piece of bone does not belong to a human does away with any need for a homicide investigation, according to Vallejo police Sgt. Jeffrey Bassett.
The bone, the size of a cookie, was discovered about 11 a.m. under a call box at the station, prompting an inquiry and the thorough examination of a pathologist.
Now that the bone has been deemed to have belonged to an animal, authorities say it will be disposed of.
To see Monday's report on when the vertebrae was found, click here.
View more videos at: http://nbcbayarea.com.