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JACKSON FAMILY: Jermaine, Tito, Marlon and Jackie Jackson performed together in Saratoga, Calif., as reports swirl the singing siblings are squabbling among themselves.

"We are a family ... [but] sometime it seems to get complicated," TMZ quoted Jermaine as saying at the Jackson concert Saturday. "We're one ... . The Jackson family is one. We are one family and we will heal, I promise you."

His mother Katherine, 82, and late brother Michael's children -- Prince, 15, Paris, 14, and Blanket, 10 -- attended the show, the celebrity news Web site said.

A Los Angeles judge temporarily stripped Katherine of her guardianship of Michael's kids last week and gave it to Tito's son T.J. after the Jackson family matriarch went on vacation in Arizona and left Prince, Paris and Blanket in California for more than a week.

Relatives are offering conflicting accounts regarding Katherine's health and whether she was accessible by phone to Michael's children while she was away. Also unclear is whether Katherine was pushed into going to Arizona by some family members who allegedly want her to get rid of the executors of Michael's estate.

Michael died in 2009 at age 50. His personal physician, Conrad Murray, is serving time in prison for involuntary manslaughter. He was convicted of administering lethal levels of anesthesia and sedatives to the popular pop singer in an effort to help him sleep.

BRET MICHAELS: Bret Michaels' publicist says the U.S. rocker has ended his engagement to Kristi Gibson, his on-off girlfriend of 16 years.

The couple announced their engagement in 2010. They are the parents of Raine Elizabeth, 12, and Jorja Bleu, 7.

"Although the couple have separated, they remain great friends and are committed to jointly raising their two daughters," Michaels' representative told People.com Monday.

The family was featured on the VH1 reality show "Bret Michaels: Life as I Know It."

RICKY MARTIN: Universal Television says it has signed a deal with U.S. singer-actor Ricky Martin to develop his first network television series and specials.

The announcement was made Monday by Bela Bajaria, executive vice president of Universal Television.

"Ricky is an iconic superstar who is as talented as he is popular," Bajaria said in a statement. "Whether he's performing before sold-out concert crowds, or starring on Broadway, where he is currently playing to standing-room only in 'Evita,' Ricky connects with his audience in a very palpable way -- and we are thrilled that he will be adding TV star to his incredible resume."

The Grammy Award winner is a former member of the Latino pop group Menudo and successful solo artist who has acted on TV's "General Hospital" and in Broadway's "Les Miserables."

ROSEANNE: Carrie Fisher, Seth Green, Katey Sagal and Sharon Stone will be among those to comically skewer Roseanne at an upcoming roast at the Hollywood Palladium.

Comedy Central announced the roasters for the Aug. 12 television special Monday.

Also expected to take jabs at Roseanne, a comedian, TV personality and actress, are Anthony Jeselnik, Jeffrey Ross and Amy Schumer.

"Glee" star Jane Lynch will serve as roast master at the event, which is being taped Saturday.

The cable television network said additional roasters will be announced shortly.