ACTRESS Katie Holmes has filed for divorce from her husband, Hollywood star Tom Cruise.

A friend of Cruise, who has been divorced twice before, said the actress had filed for divorce on Thursday.

Los Angeles-based lawyer Bert Fields said: "Tom is very saddened by that, and right now he is concentrating on the kids."

Mr Fields, who said he was not representing Cruise in the divorce, but was speaking as a friend, would not give a reason for the filing, saying only: "Tom wants to be very private."

A representative for Holmes could not be reached for comment, but People magazine cited Holmes's lawyer, Jonathan Wolfe, as confirming the divorce. "This is a personal and private matter for Katie and her family," Mr Wolfesaid. "Katie's primary concern remains, as it always has been, her daughter's best interest."

The pair married in Italy in 2006, and they have one daughter together, six-year-old Suri.

Cruise, 49, was previously married to actresses Mimi Rogers and Nicole Kidman, with whom he has two children.