The suspect in a shooting that left one Colorado sheriff's deputy dead and four others wounded was a man known to local law enforcement for rants against "dirty cops" and the local sheriff that he posted online, officials said.
Riehl, an attorney and an Iraq war veteran, had also posted videos criticizing Colorado law enforcement officers in profane, highly personal terms, the AP reports.
"We have multiple officers down", Deputy Jason Blanchard said in a telephone interview on Sunday.
According to the sheriff's office, the gunman has been shot and killed.
Forster toldCNN that Riehl enlisted in the Army Reserve in 2003.
When the officers enter Riehl's apartment, he continues the livestream.
The Douglas County Sheriff's Office, Parker Police Department, Lone Tree Police Department, Castle Rock Police Department and Colorado State Patrol went on accident alert because of the incident.
"There were well over 100 rounds fired in this engagement, 100 rounds from the suspect", he added. "Three of the deputies were able to get to safety; however, the fourth officer, Deputy Parrish, was not able to retreat".
Authorities said Matthew Riehl, 37, fired more than 100 rounds from his suburban Denver apartment before he was killed by a SWAT team Sunday.
Detectives in Wyoming said they warned Colorado police about six weeks before a gunman shot dead a sheriff's deputy and wounded four other officers.
Parrish leaves behind a wife and two children.
Not long after the deputies found the suspect barricaded in his room, Riehl opened fire, Spurlock said. "I can't tell you how hard it is for a leader to sit down with the spouse of an officer who was killed in the line of duty".
He said the four officers injured were in stable condition.
The other injured officers included Deputy Mike Doyle (28), Deputy Taylor Davis (30), & Deputy Jefferey Pelle (32) from the DCSO along with Officer Tom O'Donnell (41) of the Castle Rock Police Department.
"When I sat with her, I could see in her eyes that her life was over", Spurlock said, referring to the deputy's wife.
"Jeff underwent surgery as a result of his injuries, and is recovering", the Boulder County Sheriff's Office tweeted.
Spurlock said deputies came under fire nearly immediately and were shot "very, very quickly" after entering the apartment and trying to talk with the suspect, who was holed up inside a bedroom. "I told her to stay inside", Silknitter told the Denver Post, recalling that he lived in Aurora in 2012 not far from the infamous movie theater shooting.
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