CUMBERLAND, Md. (AP) — Trial dates have been set for three men accused of trying to use a small, remote-controlled aircraft to smuggle drugs, tobacco and pornography into a maximum-security state prison in western Maryland.

Twenty-five-year-old Thaddeus Shortz of Knoxville and 43-year-old inmate Charles Brooks entered pleas of not guilty at their initial appearances Tuesday in Allegany County Circuit Court. Brooks’ trial is scheduled for Dec. 30. Shortz’ is set for Jan. 14.

READ MORE: Inner Harbor Hotels Prepare For Fourth Of July Festivities

Twenty-nine-year-old Keith Russell of Silver Spring pleaded not guilty last month and faces trial Jan. 7.

READ MORE: 4 People Shot Near East Baltimore Intersection Within 14 Hours

All three are charged in what police say was a plot to fly the contraband on Aug. 22 into the Western Correctional Institution near Cumberland, about 120 miles west of Baltimore .

Attorneys for the defendants declined to comment on the allegations.

MORE NEWS: Maryland Weather: Sunday Brings Clear Skies Brightening The Holiday Weekend

(Copyright 2015 by The Associated Press. All Rights Reserved.)