WEST SACRAMENTO, CA (CNN) -- He vowed to serve and protect, but now a West Sacramento, California police officer is accused of using his badge to sexually assault at least six women. He's off the force and being held on $26 million.

Police chief Dan Drummond says, "The entire department is shocked that something like this could have happened."

The arrest is nothing short of stunning. Police say one of their own, Officer Sergio Alverez repeatedly assaulted women while on-duty and on patrol. Drummond says, "I'm just appalled and sickened that someone who is put in a position of trust would violate that trust."

Police say Alverez worked solo on the graveyard shift for five years, cruising up and down the west capitol corridor, an area known for prostitution.

Investigators say he stopped women walking around and sexually assaulted them, sometimes in his patrol car. Other times, he'd take them somewhere.

Alvarez faces 35 felony charges, including multiple counts of sodomy, rape, oral copulation and kidnapping.

Six victims have been identified so far, all women between the ages of 20 and 47. Police say some of the women were assaulted more than once. Drummond says, "He was quiet family man devoted to his family saw him in uniform all the time saw his colleagues at the house in uniform."

Former neighbors of the now-former cop are beyond shocked. They say Alvarez is married with three kids. He grew up here, graduated from River City High, and took his first job as a cop in West Sacramento.

It may be his last. After spending months on administrative leave, he was officially fired Monday, charged and booked into the Yolo County Jail on $26.3 million bail.