A missing and endangered person advisory was issued Friday for 15-year-old Makenna Ann Thompson, who was last seen Sunday and initially reported as missing by the Helena Police Department Tuesday.
Thompson is a 5-foot-4, 100 pound white female with brown hair and hazel eyes. She has been diagnosed with bi-polar and is not taking her medication.
Authorities believe she voluntarily left with 21-year-old Garrett Poteet. He is a 6-foot-3, 300 pound white man with brown hair and green eyes.
They might be camping or heading to Colorado in a dark green 2004 GMC Sierra crew cab pickup, with Montana plates 581226A.
Poteet's credit card was used in Ballantine three or four days ago.
Anyone with information is asked to contact the Helena Police Department at 406 442-3233 or call 911.