Police say the three, ages 15, 16 and 17 escaped by foot on June 7, 2014 and have not been seen since.
The 15 year old is described as 5'2" with a medium build and light brown hair. The 16 year old is described as also 5'2" with blonde hair and the 17 year old is described as 5'4" with straight, long brown hair and brown eyes.
All three were last seen wearing bright yellow shirts and navy sweatpants.
Anyone with information is asked to call Pennsylvania State Police at 717-485-3131.
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