Colorado Police Receive Call Threatening to Execute Officers

Police on high alert after shots were fired hours after a 911 call threatening officers' lives.
1:46 | 09/08/15

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Transcript for Colorado Police Receive Call Threatening to Execute Officers
Robin. All right, Ariel lealex, thank you. Police officers coming under fire after a threatening phone call and ABC's Pierre Thomas has the latest and joins us from Washington. Good morning, Pierre. Reporter: Good morning, robin. Today Denver area collision on alert after a threatening phone call to law enforcement and gunfire targeting police soon after. Three shots fired. We're taking fire from the north. Reporter: 9:45 Sunday shots reported fired at police in Aurora, color Just send everybody. Reporter: Those shots only four hours after a call came in via 911 saying police were going to be executed. This police dispatcher warning officers in the area. Party stating he was going to shoot any police officer that he saw by themselves. Reporter: It's unclear if it's related to the earlier 911 call. But authorities here are taking no chances. Especially as the Colorado scare came just hours after a policeman in Las Vegas was wounded ambush style while a man fired at him while he was sitting in his squad car. A recent spate of deadly confrontations. August 28th, Houston, an officer executed, shot repeatedly in the back of the head as he pumped gas. And four days later a police officer in a northern Chicago suburb was fatally shot while on routine patrol. Three suspects still at large. On Monday, police lieutenant Joe gliniewicz mourned by thousands of police and citizens. The irony here is that fatal police shootings are down 12% compared to last but nose who lost loved ones in the line of duty will find no comfort in those statistics and law enforcement is deeply concerned. Robin. You're right. No comfort in that at all. All right, Pierre, thank you.

This transcript has been automatically generated and may not be 100% accurate.

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