Arkansas State Police said Batesville police officer Michael Dickinson responded to a home on Neely Street Friday night.
Once there, Marvin Stair, 44, reportedly pulled out his rifle and fired shots at Dickinson, hitting him multiple times.
Joseph Penn heard shots from his home. When he stepped outside, he saw Dickinson stumble to the ground.
"I yelled and I said are you okay, and he said no, I've been hit. I said do you need help. He said yeah," said Penn.
Penn is a former army medic and helped the Batesville officer.
"I just started putting pressure on his wounds, you know, and trying to--because there was a lot of blood, and I was really afraid he was going to bleed out. I could tell he was already starting to lose his consciousness and all," said Penn.
Penn then saw two girls run out of the house.
Once backup arrives, Penn points out the gunman standing in the doorway.
"He ran across and he pulled his weapon, and said get down. Drop your weapon and get down now. And he said get down now. And the man wouldn't get down. And the man you know, looked like he was going to draw his weapon on the officer and the officer had to fire back on him," said Penn.
Stair was pronounced dead at the scene.
Dickinson is now recovering.