Governor Jared Polis has ordered all flags in the state to be flown at half-staff through sunset tomorrow in honor of U.S. Capitol Police officers.
Officer Brian Sicknick died a day after the Capitol was stormed by a mob. Officer Howard Liebengood died Saturday when he took his own life.
Dozens of officers were injured in the violence.
The FBI has sent a memo to authorities across the country, warning of the possibility of armed protests at all 50 state capitols starting this week and lasting through Inauguration Day on January 20. Federal law enforcement officials have advised local police to prepare for the possible protests with increased security measures at statehouses and other government buildings.