HELENA, Mont -

Blackfeet Chairman Willie Sharp Jr. says Montana's U.S. attorney broke the tribe's trust in prosecuting a tribal leader accused of fleeing a traffic stop.
    
Sharp criticized U.S. Attorney Mike Cotter for not consulting with tribal leaders before filing reckless and drunken driving and obstruction of a peace officer charges against state Sen. Shannon Augare.
    
Sharp's comments are in an Aug. 14 letter to Cotter recently obtained by The Associated Press.
    
Neither Sharp nor Cotter responded to questions about the letter.
    
A Glacier County deputy pulled Augare over for erratic driving within the reservation boundaries on May 26.
    
The sheriff's office turned the matter over to the tribe after Augare allegedly sped away.
    
The tribe's prosecutor turned the case over to Cotter. Sharp says he was not authorized to do so.