Arnold Schwarzenegger has at least two more secret children, British actress Jane Seymour has claimed.

It emerged last week that the actor and former governor of California - who recently separated from wife Maria Shriver - has a 14-year-old son with his family's now-retired housekeeper Mildred Patricia Baena and his famous neighbour has predicted further revelations will emerge about his personal life.

Jane - who lives close to Arnold in Malibu, California - said she was not shocked to hear Maria and Arnold, who have four children Katherine, 21, Christina, 19, Patrick, 17, and 13-year-old Christopher had split after 25 years together because she has been told there are other secrets set to be exposed.

She told CNN: "I was not even remotely surprised. The moment I heard it, that there was an announcement of their separation...He was obviously jumping the gun before everyone else told the world of the news.

"From what I gather, I think there will be lots of information coming people's way. I heard about two more [children] somebody else knows about. I even met someone who knows him well."

Meanwhile, Maria is said to have hired A-list divorce lawyer Laura Wasser and could pocket $100 million in a settlement, with their combined worth said to be between $200 million and $400 million.