C.R.S. § 16-2.5-124

A liquor enforcement investigator is a peace officer while engaged in the performance of his or her duties and while acting under proper orders or regulations whose primary authority shall be as stated in sections 44-3-905 (1) and 44-7-104 and shall also include the enforcement of all laws of the state of Colorado and who may be certified by the P.O.S.T. board.