Robert Gonzales, 53, of Des Moines pleaded guilty to robbery and kidnapping charges after forcing a woman to withdraw cash at several ATMs in June.

Matthew Muller, who is currently serving a 40-year sentence for the kidnapping of Denise Huskins, pled guilty Friday in Santa Clara County court on new charges of medicating and then sexually assaulting another woman.

Matthew Muller was convicted of kidnapping and sexual assault in a 2015 case in which Vallejo police initially accused the victim and her boyfriend of making up the story of her abduction. He pleaded guilty this week in two additional cases.

Convicted "American Nightmare" kidnapper and rapist Matthew Muller pleaded guilty on Friday to new assault charges stemming back from 2009.

Muller was in prison for the infamous Vallejo kidnapping when he implicated himself in unsolved attacks in Palo Alto and Mountain View, prompting a renewed investigation and DNA analysis.

Matthew Muller pleads guilty to invading woman's homes in Mountain View and Palo Alto in 2009, six years before kidnapping Denise Huskins in Vallejo in ordeal initially deemed a hoax.