In day three of Eric Knysz's murder trial, Lake County sheriff's deputies took the stand.
Eric Knysz is accused of shooting and killing State Trooper Paul Butterfield in September 2013.
Thursday, sheriff's deputies told the jury about searching for Knysz and the pick-up truck he was driving.
State Trooper Steven Arendt, who confronted Knysz at a Manistee County gas station after the shooting, took the stand as well.
"Saw the suspect from around the corner with a gun in his hand, he was running toward his car," Arendt told the jury. "I identfied myself, ordered him to stop, he did not stop. I then fired three rounds at him in quick succession, watched him drop the gun and fall to the ground."
The trooper who rode to Munson Medical Center with Knysz also testified.
The same trooper had to identify Trooper Butterfield, who was also treated at Munson.
A forensic scientist from the Michigan State Police spoke about the revolver that was found at the Manistee County gas station.
Michigan State police say one fingerprint on the gun matched Eric Knysz.
It's the same gun troopers say Knysz pointed at them when they confronted him.