GRAND JUCTION, Colo. (AP) — Colorado Mesa University has disciplined an assistant professor who invited a political activist to recruit his students to campaign for Hillary Clinton.

The Daily Sentinel reports that CMU President Tim Foster put assistant professor Stan Heister on suspension from his tenure-track position for two academic years.

READ MORE: Shooting In Olde Town Arvada: Officer On Leave After Death Of Samaritan Johnny Hurley

Heister will continue to teach classes, but Foster says that time won’t count toward his tenure until the suspension period is complete.

Students complained to administrators in September that Heister invited a woman from Work for Progress, a political advocacy organization, to recruit students to campaign for Democratic presidential candidate Clinton.

READ MORE: Swallows Charter Academy Graduate Claims Senior Photo 'Replaced Because Of Pride Flag'

Human Resources Director Barbara Case-King reviewed the complaint and discovered that Heister invited representatives to two of his business classes.

Heister did not return phone calls or emails seeking comment on Monday.

MORE NEWS: Living Memorial Lines Fence Surrounding King Soopers Store On Table Mesa Drive In Boulder

(© Copyright 2016 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)