The Sweet Grass County Sheriff's Office is asking for the public's help in locating a missing teen.

16-year-old Marshall Dammann was last seen in Big Timber on June 29.

According to a report, he could be heading to either Great Falls or Livingston.

Dammann is 5’7” and approximately 160 pounds with dark blonde hair and blue eyes.

He was last seen wearing a white and grey sweatshirt, blue jeans and white tennis shoes.

If you have any information on this case you are asked to call 406-932-5143.