Sadler said the deputy initiated a traffic stop on Thursday when he was fatally wounded.
James Michael Bowden, 32, was arrested this afternoon, May 11th at 2:40pm, after a five hours standoff with the Arkansas State police and local law enforcement agencies.
Investigators determined that a suspect was in a home near those bodies, and negotiators were trying to contact the suspect Thursday afternoon. Sheriff Bill Gilkey said at the news conference.More news: Wizards' Oubre suspended for Game 4 for knocking over Olynyk
The state police said investigators suspect those two bodies are connected to the disturbance call.
Bowden is being held in connection with three homicides that occurred this morning, including the death of Yell County Sheriff's Deputy Lieutenant Kevin Mainhart.
Bowden's father also told the TV station that the deputy had fired a Taser at the suspect, who allegedly thought he had been shot and then fired back, fatally wounding the officer. Two other people were found dead near a home, and authorities say the deaths appear to be linked to Mainhart's killing.More news: FIFA to investigate Pogba´s move to Manchester United
Authorities said Bowden is suspected of killing Yell County Sheriff's Lt. Kevin C. Mainhart during a traffic stop while he was responding to a call about a disturbance at the home near Dardanelle, which is about 65 miles (105 kilometers) west of Little Rock.
Mainhart was a law enforcement officer in Yell County for five years after having been a police officer in West Memphis, Arkansas, for more than 20 years.
The Arkansas State Police says it's assisting the Yell County Sheriff's Office with the investigation. "This deputy checked in for duty this morning not even realizing that this would be his last call".More news: US's Trump To Meet Russian Foreign Minister Lavrov At White House
The deputy, whose name wasn't immediately released, was on his way to check a disturbance call on rural Gum Springs Road when he pulled someone over at a nearby intersection shortly after 7:15 a.m. CT, Sadler said. He says the suspected shooter is now in a home in rural Arkansas and that officers are trying to coax him into surrendering.