City officials say Dailey went to the sheriff's office to help after someone called an ambulance for a woman with a neck injury. They say deputies arrested Dailey after he refused their orders to leave.
Fire Capt. Dan Dailey was released about an hour after his March 27 arrest.
City officials defended Dailey's decision to go to the scene. Sheriff Ed Holte was out of the office Friday and didn't respond to a message.
The city and sheriff have been at odds over who should provide emergency protection outside Leadville.