FOLSOM, Calif. (AP) - Gov. Arnold Schwarzenegger has rejected parole for a Southern California dentist who killed three people in the 1980s by administering fatal doses of anesthetic.

A panel of appellate court judges and a state parole board voted earlier this year to release 65-year-old Tony Protopappas. He has served more than 25 years of his 15-to-life sentence for second-degree murder.

But the Daily Pilot reports that Schwarzenegger rejected the bid on Dec. 15.

 In 1983 and 1984, Protopappas gave the wrong doses of a general anesthetic to 23-year-old Kim Andreassen; 31-year-old Cathryn Jones; and 13-year-old Patricia Craven in his Costa Mesa office.

Protopappas wasn't licensed to administer the anesthetic. His attorney, Rich Pfeiffer, didn't return an e-mail from The Associated Press.

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