GREENWOOD VILLAGE, CO — A Denver police sergeant is accused of drinking and driving an unmarked police car through the area of a fatal crash on Interstate 25.

Bryce Robert Jackson faces multiple charges, including driving under the influence of alcohol, prohibited use of weapons, careless driving, and having an open container of alcohol in a car.

Greenwood Village police officers were called to a seven-vehicle crash Wednesday night on I-25, just north of the Arapahoe Road exit. All northbound lanes of I-25 were closed and “multiple” patrol cars had their red and blue lights flashing, according to the Greenwood Village Police Department.

Police officers saw a dark-colored Chevy somehow drive through the blocked-off area, officials said. The officers stopped the driver, Jackson, who told them he worked for the Denver Police Department, according to Greenwood Village police.

Officers said Jackson showed signs of intoxication and had open containers of alcohol in his vehicle, which turned out to be an unmarked Denver police vehicle, investigators said. A handgun was also found in the vehicle, according to authorities.

Jackson was booked into the Arapahoe County Detention Center.

Jackson has been with the Denver Police Department since 2004, the department said.

“Sgt Jackson has been placed in an offline assignment pending the outcome of the investigation conducted by that agency,” The Denver Police Department said in a statement. “Per DPD policy, once the investigation concludes, our internal affairs unit will conduct their investigation along with oversight from the office of the independent monitor.”