Billings, MT -

A former special education teacher at a Billings middle school who twice received deferred sentences for fraudulently obtaining prescription pain medication has now pleaded guilty to five felony charges.

The Billings Gazette reports Koby Gayle Murray appeared before District Judge Gregory Todd on Tuesday and pleaded guilty to three counts of fraudulently obtaining prescription drugs, possession of dangerous drugs and tampering with or fabricating evidence.

Sentencing is set for Oct. 22.

Murray was first charged in 2007 with trying to obtain pain medications without a prescription. The case ended with a deferred prosecution agreement and she returned to teaching in the fall of 2008.

In July 2012, Murray was charged again. She reached a deferred prosecution agreement in May, but tested positive for drugs in June and the charges were re-filed.