Aurora
UPDATE: Police have confirmed that the gunman was shot and killed by officers and that four people are dead in the townhouse, including the gunman, 9 News reports.
Police entered the home after hours of failed attempts to negotiate with the gunman. He wouldn't come out even when tear gassed, the officers said.
Inside, three people were discovered dead, according to police.
The names and ages of the victims have not been released.
EARLIER:
Just months after last year's horrific Aurora movie theater shooting, there's more terrible news from the small Colorado town.
Police say there's an armed man believed to be holding hostages inside a home in Aurora, 9 News reports.