A Montana State Prison guard has been accused smuggling methamphetamine and marijuana into the prison in exchange for cash.

A federal grand jury indicted Martin Reap on conspiracy, drug possession, drug distribution and bribery charges earlier this month. Reap pleaded not guilty during an arraignment Thursday in Missoula.

The indictment alleges that Reap conspired with unnamed inmates to smuggle the drugs into the Deer Lodge prison for distribution to other inmates between February 2015 and last month. In return, Reap allegedly received more than $5,000 from others who participated in the drug-smuggling conspiracy.

Federal Public Defender Michael Donahoe, Reap's attorney, was traveling and did not immediately return a call or email request for comment. Reap does not have a home phone listing.

Montana Department of Corrections spokeswoman Sandy Jacke declined to comment.