NorCal Rapist Captured Using Ancestry DNA

A serial rapist believed to have attacked multiple women across six counties in Northern California has been apprehended after 27 years, again with the help of ancestral DNA.

The pursuit and capture of the so-called NorCal Rapist once again involved the Sacramento County District Attorney’s Office, which helped nab the infamous Golden State Killer using a genealogy database earlier this year.

"I have often said in my career that DNA is the silent witness to the truth," Sacramento County District Attorney Anne Marie Schubert said in a statement. "For 27 years, that truth was not known until now."

The suspect is a 58-year-old Benicia man named Roy Charles Waller who is employed by the University of California, Berkeley. He was arrested without incident at his workplace Thursday.

"This suspect is a real life boogieman," said Yolo County District Attorney Jeff Reisig. "He snuck into the victim's homes, under the cover of darkness...and attacked them."

Waller was arraigned on 12 counts of aggravated sexual assault on Monday. He is believed to committed crimes in the counties of Sonoma, Solano, Contra Costa, Yolo, Butte and Sacramento.