The Montana Department of Justice has issued a Missing & Endangered Persons Advisory on behalf of Helena PD for Cheyenne Petersen, age 16 who was reported missing from Helena, MT at 3:20 PM on Oct 26, 2015. Cheyenne is believed to be suicidal. Cheyenne is 5 feet 4 inches tall, 145 lbs, with brown hair (currently dyed blue on front and pink on top) and blue eyes. She was last seen wearing a black belly shirt with a picture of Jesus on the front that says "I shall return", black leggings and a black hat with rainbow colored dots. Cheyenne has a tattoo above right hand thumb that says "love" and a heart tattoo on the right wrist. If located please contact Helena Police Department 406 442-3233.