Tom Clements, executive director of the Colorado Department of Corrections, was found dead at his home in Black Forest, Colorado, said Hickenlooper spokesman Eric Brown.
Sheriff's Lt. Jeff Kramer says Tom Clements was shot to death around 8:30 p.m. Tuesday night when he answered his front door in Monument, north of Colorado Springs. Police are searching for the shooter.
Further details about Clements' death weren't immediately available. Black Forest is less than 20 miles northeast of Colorado Springs.
Clements, 58, lived in Monument and was appointed to serve as the head of the DOC by Governor John Hickenlooper in January 2011, reports CBS affiliate KCNC in Denver.
He oversaw operations of state and private prisons and parole operations. Clements came to Colorado from Missouri, where he worked for 31 years in the Missouri Department of Corrections as Director of Adult Institutions.
Missouri Governor Jay Nixon issued the following statement Wednesday; "Tom dedicated his professional life and his considerable skills to public service and protection, and the citizens of Missouri join the people of Colorado in mourning this tremendous loss."
(information for this story contributed by CBS News and CNN)