Sources with an intimate knowledge of the situation tell TMZ ... Michael Jackson's daughter called a suicide hotline and the person on the other end was alarmed enough to call 911.
Our sources say in addition to cutting her right forearm, Paris had taken a large number of Motrin pills.
We're told once Paris was taken by stretcher to an ambulance and then transported to a nearby hospital, she was placed under a 5150 psychiatric hold for 72 hours.
She received "numerous stitches" for the cut.
As for the suicide note ... we do not know what she wrote.
TMZ broke the story ... officials first responded to Paris' home in Calabasas around 1:30 AM Wednesday morning.
This is so sad. You just don't ever know what is going on with a person. They can seem fine on the outside and on the inside they are broken. Hope and pray she gets the help she needs.
