Movie star and former California governor Arnold Schwarzenegger said Tuesday his wife Maria Shriver had left him after he admitted to fathering a child with a member of the household staff.

"After leaving the governor's office, I told my wife about this event, which occurred over a decade ago," Schwarzenegger, 63, said in the statement to the Los Angeles Times. "I understand and deserve the feelings of anger and disappointment among my friends and family. There are no excuses and I take full responsibility for the hurt I have caused. I have apologized to Maria, my children and my family. I am truly sorry."

The LA Times did not name the woman or her child to protect their privacy, but said she retired in January after working for the couple for 20 years and left on good terms.

It said the 55-year-old Shriver, a daughter of the storied Kennedy clan, moved out of the couple's Brentwood mansion earlier this year after Schwarzenegger admitted paternity.

It quoted an unnamed source as saying that Schwarzenegger had always supported the child financially and would continue to do so.

The former California governor and Shriver said earlier this month that they were separating after 25 years of marriage to take time to "work on the future" of their relationship.

The couple, who married in 1977, have four children, aged between 14 and 21.

Their marriage had come under the spotlight over the years, notably amid reports of his history of groping women during campaigning for the 2003 recall election, which Schwarzenegger won, the LA Times reported.

Shriver, a former TV journalist, defended him at the time, and stood by his side during his seven years at the helm of the Golden State, a term that ended when Jerry Brown succeeded him four months ago.

Austrian-born former bodybuilder Schwarzenegger, star of the Terminator blockbusters, had started to return to show business since he stepped down as governor, with plans for a Governator comic book and animated TV show.

The LA Times said neither Shriver nor the household staffer would comment on Schwarzenegger's statement.

In his statement, Schwarzenegger again called for privacy, asking the media to "respect my wife and children through this extremely difficult time."

"While I deserve your attention and criticism, my family does not," he said.