Arapahoe County deputies arrested 41-year-old Philip Thomas Brown after he told deputies he broke into a substation because he was homeless and suffering from the flu.
At 12:45 a.m., deputies getting off work noticed a door to the substation at 9200 East Iliff was broken.
The deputies then noted a man was inside, attempting to access a gun safe, and holding a sheriff's office ballistic shield in front of his chest.
Deputies tried to open the door, but found it barricaded. They called the substation phone and the man answered, "Arapahoe County Sheriff's Office."
Additional deputies responded and established a secure perimeter of the substation. According to authorities, the man ignored repeated commands to leave the building.
After ten minutes of commands, deputies say Brown came out the front door and began walking towards them aggressively.
One of the deputies then deployed his K9 named Orry, who bit Brown on his left arm.
Brown was treated at the hospital before being transported to jail.
No officers or animals were injured.
Brown is being held on a $50,000 bond, facing charges of second-degree burglary, criminal mischief and obstruction.