A 19-year-old man in Texas accused of killing a law enforcement officer was arrested with the handcuffs of the officer he allegedly killed.

Eddie Miller is accused of shooting and killing a deputy and wounding two officers in an ambush on Oct. 16, Harris County Precinct 4 Constable Mark Herman said.

"I was briefed on it, and I can tell you with 100% certainty it was an ambush," he said. "These individuals were shot from the back in the course of trying to make an arrest, and so, you know, there's no doubt it was an ambush and an attack on law enforcement."

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Miller was arrested Sunday and faces charges of capital murder of a police officer, attempted capital murder of a police officer, and aggravated assault against a public servant.

Miller is believed to have killed 30-year-old Harris County Precinct 4 Constable Deputy Kareem Atkins and wounded 26-year-old Juqaim Barthen and 28-year-old Darrell Garrett, investigators said.

The three men were alerted of a possible robbery, and when they arrived on the scene, they were shot with an AR-15 rifle from behind, according to the report.

Law enforcement issued a $76,000 reward in its search of the shooter, who fled the scene.

The ambush of the three officers has resulted in a wave of support for police from civilians in the Houston area, Herman said.

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"The American people love their police," he said. "The outpouring of support from this incident, we've had officers from as far as New York come down and attend the funeral services, phone calls, emails. The American people are smart people. They need their police, and we need our communities."