Massive manhunt for suspect wanted for killing cop at traffic stop

Missouri authorities are calling Ian McCarthy, 39, a "cold-blooded killer" after he allegedly shot and killed rookie officer Gary Michael. Chris Michael called his brother his "hero" adding, "he was always lighting my world."
1:45 | 08/08/17

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Transcript for Massive manhunt for suspect wanted for killing cop at traffic stop
A manhunt for the killer of a police officer during a routine traffic stop in Missouri. The victim's family is speaking out as the drag234net continues to grow. Alex Perez is on the scene. Reporter: This all happened very quickly. The officer pulled the suspect over and within seconds, the suspect was shooting at him. This morning, an all out manhunt for a suspect they're calling a cold-blooded killer. Ian Mccarthy accused of shooting and killer an officer rookie. Shots fired. Officer down. Reporter: Sunday night around 10:45 officer Michael pulled Mccarthy over because his headlines were out and Mccarthy immediately getting out of his vehicle and shooting at the officer who was able to return fire even after he was shot. But the suspect sped away. Suspect believed to be running on foot from that location, subject is still armed. Reporter: The 39-year-old has an extensive criminal background including an outstanding 2013 arrest warrant for assault and at least a dozen other criminal charges in New Hampshire. It was cowardly for him to just jump out and maambush officer Michael. Officer Michael was an army vet, stepfather of two and had only been with the force for about a year. He's my hero. Right. He's my big brother. That's it. He was always the light of my world. I will miss him but I had a great time with him. Reporter: And family members say officer Michael always wanted to be a police officer and was doing his dream job, some 60 investigators here now working this case around the clock. Robin. So sad. Alex, thanks. Now to another manhunt.

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

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