LOS ANGELES (AP) -- Janet, Randy and Rebbie Jackson say the executors of Michael Jackson's will are causing harm by damaging "fundamental family relationships" and isolating matriarch Katherine Jackson "from anyone questioning the validity of Michael's will."
The Jackson siblings released a statement late Friday through an attorney amid a fight over their brother's will with the executors of his estate.
On Thursday a judge named TJ Jackson, a cousin to Michael Jackson's three children, as co-guardian with Katherine Jackson, who was named their sole caretaker in the disputed will.
Janet, Randy and Rebbie Jackson accuse the executors of a "relentless" negative media campaign. They say they plan to maintain their challenge and insist they're not motivated by money.
The executors did not immediately respond to calls or emails seeking comment.

BEVERLY HILLS, Calif. (AP) -- Arnold Schwarzenegger says he was so eager to pursue bodybuilding success that he briefly ended up in an Austrian military jail.
The Austrian-born actor said Friday he was 18 and serving a mandated year with the army when he snuck out of camp for the Junior Mr. Europe contest in Germany.
Schwarzenegger says he won the contest but also earned two or three days in the brig. But he says military officials felt "uncomfortable" and released him.
The 65-year-old Schwarzenegger is the subject of a new ESPN Films documentary, "Arnold's Blueprint," which will debut Sept. 26 on the ESPN website Grantland.com. The film is the first of a series of short documentaries that will be available online.

LONDON (AP) -- Even Prince William and Prince Harry were kept in the dark.
They told the BBC on Friday had no idea that their grandmother, Queen Elizabeth II, would play a cameo role in the Olympic opening ceremony.
The sedate, octogenarian monarch surprised many Britons by appearing in a film played at the Danny Boyle-directed opener last week.
The short tongue-in-cheek film shows the queen being picked up by James Bond (played by Daniel Craig) at Buckingham Palace before being whisked aboard a helicopter and flown toward the Olympic Stadium.
As the film ended, two people leapt from a helicopter above the stadium, suggesting that the queen herself was floating down to open the games.
An Internet video of the queen-James Bond piece has been widely viewed.

DENVER (AP) -- The founder of The Tennis Channel and The Ski Channel is launching another niche offering, The Surf Channel, in mid-September.
Founder Steve Bellamy says the video-on-demand network is slated to be available initially to 20 million households through cable, satellite and online distribution partners, including Comcast, Cox Communications, DirecTV, Dish Network, Filmon.com and YouTube users.
Bellamy started The Tennis Channel in 2003 with access to about 53,000 households. The Ski Channel launched in 2008. He says both should be available to about 45 million households soon.
Bellamy concedes far fewer people surf than play tennis, but he says the beautiful locations and beautiful bodies involved in surfing are great for television.