Six weeks after Arnold Schwarzenegger revealed he had fathered a child out of wedlock, his wife has filed divorce papers to end their 25-year-old marriage.

Maria Shriver cited irreconcilable differences for the breakup with the Terminator star , but offered no additional details.

The couple announced they had separated on May 9.

A week later, the former California governor and one-time action star admitted he fathered a child with a member of his household staff years ago.

Shriver, 55, a former television journalist and a daughter of the Kennedy political dynasty, filed papers seeking to dissolve her 25-year marriage to Schwarzenegger, 63, in Los Angeles County Superior Court, citing irreconcilable differences.

According to the four-page, standard-form divorce filing, Shriver seeks unspecified spousal support and joint custody of the couple's two minor children, Patrick, 17, and Christopher, 13. They have two adult children together, Katherine 21, and Christina, 19.

A spokesman for the former "Terminator" film star declined comment. Representatives for Shriver could not be reached immediately.

Shriver and Schwarzenegger, the Austrian-born former bodybuilder turned Hollywood action star and politician, announced their separation in May, just four months after he left office as California governor.

Source: Press Release