Los Angeles, June 16 (IANS): Late pop star Michael Jackson's daughter Paris's suicide attempt came after she learned that she does not have the same biological father as her brother Prince.

Paris, who sources say has always known Michael Jackson could not be her natural dad, was convinced she was Prince's full sibling. And the 15-year-old was devastated after being told the truth, reports thesun.co.uk.

She believed Debbie Rowe was their mum and an unnamed man their dad. But after being told the truth, a string of rows followed between devastated Paris and Prince, 16.

She plunged into depression and is still in a Los Angeles hospital after reportedly slashing her wrists and downing pills on June 5.

Paris was given the news to prepare her for a tough grilling during the 26 billion pounds court fight between the Jackson family and concert firm AEG, who they blame for Michael's death.

“Paris has always wanted to believe Michael was her dad, but was aware that wasn't really the case. She was convinced her and Prince were full siblings. She always idolised him. Hearing she wasn't started a downward spiral,” thesun.co.uk quoted a family source as saying.

Paris is said to be feeling better but will stay in hospital for about 30 days.

After that she will spend more time with mum Debbie, 54, in California.

Paris is said to hate the “circus” at the Jackson household - but remains close to her grandma Katherine.

When contacted, Paris's representatives did not return calls.