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.
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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.