Story highlights "We are about to start striking fear," message to police says

Denver-area law enforcement agencies are on alert after call

(CNN) Denver-area law enforcement agencies are on alert after someone called the Aurora Police Department's 911 center and threatened to start shooting officers.

"It's time that you guys know we are no longer playing around with the police departments," the caller said in a message left Sunday evening. "Aurora and Denver, we are about to start striking fear, shooting down all cops that we see by theirselves (sic)."

"This will go for the Sheriff's Department. You guys are evicting innocent people. Let us catch you by yourself and it's shots fired."

Aurora police described the message to CNN as an "alarming call" that they shared with neighboring agencies. The department did not discuss police tactics in response to it.

Read More