A Colorado state representative will spend the night in jail after she was arrested, accused of bringing a gun into Denver International Airport on Tuesday.

A spokesperson for the Denver Police Department says Lori Saine, a Republican who represents Firestone in Weld County, is being held for investigation of introduction of a firearm into a transportation facility.

The investigation is ongoing, and the circumstances surrounding her arrest were not released.

The case will be presented to the Denver District Attorney's Office to consider possible charges. She's being held with no bond, and is due in court on Wednesday.

The Denver Police Department released the following statement about her arrest:

"The Denver Police Department arrested Lori Saine today at Denver International Airport and she is currently being held for Investigation of Introduction of a Firearm into a Transportation Facility. The investigation is ongoing, so additional details are not available for release at this time. At the conclusion of the investigation, the case will be presented to the Denver District Attorney’s Office for consideration of possible charges."

9NEWS' has attempted to reach Saine for comment and has not yet heard back.

Firearms are allowed on planes if they are properly stored in checked luggage. Saine has advocated for gun rights and co-sponsored a 2017 bill to repeal some restrictions on ammunition magazines.

Saine is the minority caucus chair in the Colorado General Assembly, and has held her seat since 2013.

Saine, who works as a sales director, serves on the House Agriculture, Livestock and Natural Resources Committee, the Legislative Audit Committee and the Legislative Council.

The Associated Press contributed to this report.