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Input: Their two brothers  ages 6 and 7  were found hours earlier when police raided a compound used by the polygamist cult Knights of the Crystal Blade  which their father  John Coltharp  created with the self-styled prophet Samuel Warren Shaffer  the Salt Lake Tribune reported.
The four  Coltharp  children had been missing since September.
 John Coltharp  was arrested in Utah Dec. 1  2017  for investigation of kidnapping  according to police. (Sanpete County Jail)
Family members who spoke to the Denver Post believed  Coltharp  gave his two daughters to Shaffer as brides  and feared for their safety given previous comments threatening to kill his children if the government tried to take them.
 Coltharp  was arrested Friday on suspicion of kidnapping and obstruction of justice  but refused to tell authorities where his children were.
The Iron County Sheriff’s Office then raided the Knights of the Crystal Blade compound on Monday morning and found  Coltharp ’s two sons.
Acting on a tip  the Iron County Sheriff’s Office managed to arrest Shaffer  who then told authorities where his two daughters  along with the two  Coltharp  girls were located  the Spectrum reported.

2 Utah girls found miles from alleged kidnapper's cult compound