It says Mainhart had worked as an officer in Yell County for five years and had previously worked 20 years with the West Memphis Police Department.
Yell County Lieutenant Kevin Mainhart, 46, was fatally shot early on Thursday after pulling over a vehicle during a traffic stop. State Police negotiators are attempting to make contact with the individual.
KATV broadcast an interview it said was with the suspect's father, James Bowden Sr, in which he said the incident stemmed from an argument his son had with his girlfriend. "He was very respected", Yell County Sheriff Bill Gilkey said.
Police say Bowden released his hostage about 30 minutes before he surrendered.
Ashley Carpenter of Danville, who was at a home near the Gum Springs Road scene, said Mainhart gave her a ride home Wednesday after her auto broke down.
At this time, authorities believe that the traffic stop and the deaths on Gum Springs Road are connected.
Two bodies were later found outside the nearby home where the disturbance call was made, and they are believed to be linked to the eruption of violence that killed the officer.
The deputy was found by a passerby, who notified police. Authorities allege that Bowden shot and killed the deputy during the traffic stop.
Sheriff JR Smith asked people to keep the Yell County Sheriff's Office in their thoughts and prayers.
"There's a special place in hell for people like that", Williams said. He was the 16th officer so far this year to be shot and killed in the line of duty.
Police initially gave a different age and middle name for Bowden, who is accused in the death of Yell County Sheriff's Lt. Kevin Mainhart and two female victims whose names haven't been released.
Gov. Asa Hutchinson proclaimed Friday the flag of the state of Arkansas to be lowered to half-staff in tribute to Mainhart's memory now to the day of interment.