[UPDATE: Misty Upham was confirmed dead on Thursday, October 16. The body of the 32-year-old actress was found in a Seattle ravine.]

Misty Upham, a Blackfeet actress best known for her roles in "August: Osage County" and "Frozen River," has been confirmed missing by Washington state police.

Indian Country Today Media Network, who confirmed the 32-year-old's missing status, report that she was last seen leaving her sister's apartment in Muckleshoot, Washington, on October 5.

Misty's father, Charles Upham, first reported her missing. "She had recently changed her medication, so she was sort of having erratic behavior," Charles said to The Hollywood Reporter. "She told me and her mom that we didn't have to worry about her any more. … I thought it sounded suicidal myself, so I called the police. She's always been a suicidal person."

If you have any information regarding Misty Upham's whereabouts, her father has asked in a statement to the media via ICTMN that you contact Washington's Auburn Police Department at 253-288-2121.