Investigators said the officer shot Timothy Johnson after he made a threatening move with a knife.
That officer has not been officially identified.
People in the small Mississippi County town said this kind of thing was unheard of in their community.
"Crazy...I mean you never thought something like that would happen in the little town of Manila for sure," said Matthew White.
White was still coming to grips with what happened directly behind his home off Highway 18 in Manila.
Tuesday night police got a call of a disturbance at a camper where 41-year old Johnson and his girlfriend lived.
"Screaming, yelling and stuff like that. And somebody said, 'call the cops.' said White.
The call took a deadly turn when a Manila Police Officer reportedly shot Johnson.
According to investigators with the Arkansas State Police...
"Johnson was holding a knife and advanced toward the officer after reportedly being ordered to drop the knife."
Because the investigation isn't complete, the name of the officer involved has not been released.
We're told Johnson was shot outside the camper where White was letting him stay.
"We was letting him stay back there till he got his disability and stuff started," said White.
He didn't know if Johnson had any previous run ins with the law.
White said lawmen lined Highway 18 after the shooting and wouldn't let him see what was happening in his own back yard.
"They made us come back in and wouldn't let us come back outside," said White.
The officer involved shooting quickly became the talk of Manila.
Paul Routon said he grew up with Timothy Johnson, but hadn't seen him in years.
News of his death was hard to understand.
"I just couldn't picture it to be honest with ya. I could not picture him being shot. But you know, if somebody pulled a knife on me I'd try to defend myself I'm sure, " said Routon.
A spokesperson with the Arkansas State Police said the agency will submit its findings to the Prosecuting Attorney.