Mathew Kinne is accused of killing his mistress Dominic Clayton [right] 

Married Mississippi cop charged with murdering a woman he was ‘having an affair with’ who was found shot in the back of the head at home by her 8-year-old son

Oxford Police Officer Matthew Paul Kinne has been charged with the murder of mother-of-four Dominique Clayton in Mississippi 

Dominique Lashelle Clayton, a 32-year-old mother of four was found dead at home by her son Sunday after a relative dropped him off at home

Family members said she was shot in the back of the head while sleeping, on Sunday

The victim’s sister said the pair were in a relationship – Kinne ‘bought my sister a car, he had it in his name, he was about to get her a house, he basically just didn’t want his wife to find out,’ Shyjuan Clayton said

Kinne, a member of the OPD for four years, was arrested Monday night after Clayton was found dead by her son on Sunday.

Kinne has been an officer for four years and is being held in Panola County Jail

 Oxford Police Officer Matthew Kinne [left] has been charged with murder of Dominique Clayton, [right]. Police said the Kinne and the mother-of-four had been romantically involved

Dominique Clayton [L-R] allegedly was shot in the back of the head during a domestic dispute on Sunday. Her sister Shuyjuan said he was having an affair with married police officer Mathew Kinne and he simply ‘didn’t want his wife to find out’ the extramarital relationship

The victim’s sister, Shyjuan Clayton, told WHBQ-TV that Dominique and Kinne were in a relationship and he ‘didn’t want his wife to find out.’
Clayton said: ‘He bought my sister a car, he had it in his name, he was about to get her a house, he basically just didn’t want his wife to find out.’

Speaking about the impact of Dominic’s death she claimed: ‘My sister needs justice, OPD shouldn’t sweep this under the rug, they shouldn’t try to cover it up, they shouldn’t try to save his image.
‘It broke us because, my sister she was the life of the party, she made everybody laugh,’ Shyjuan Clayton reminisced about her sister.
‘My sister was so crazy and silly so we didn’t expect this, nothing is going to be the same without her.’
WHBQ-TV reported Clayton, a mother-of-four, was found shot in the back of her head by her 8-year-old son after he was dropped at home Sunday by a family member.
Her son had tried to play a prank on his mother by leaving a toy snake outside the house. However when he went inside, he came back out and told relatives that his mother was dead.
The victim, Dominique Lashelle Clayton, was home alone Saturday because her four children were spending the night with their uncle.

Heart broken: The victim’s sister Shyjuan Clayton, [photo], said her death has left their family ‘broken’

At a press conference on Tuesday, Interim Oxford Police Chief Matt McCutcheon would only say that Kinne, who is with OPD for four years, and Clayton were ‘possibly involved’ in some kind of relationship but declined to elaborate further.   

Oxford police called in the Mississippi Bureau of Investigation to lead the inquiry, a common step in shootings involving officers in Mississippi.

McCutcheon declined to elaborate on the manner of death or other details, saying he would answer questions at a future time.
‘To our community, we know that you’re hurting, and we want to assure you that we will not hide behind our badge.
‘This badge stands for truth and justice, and today is about justice for Dominique,’ McCutcheon said.

Dominique Clayton’s  was found dead at her home at 1009 Suncrest Drive in Oxford, by her 8-year-old son. Her sister Shyjuan said her lover, police officer Mathew Kinne had bought her a car and was going to buy her a houses on on Sunday

Prepared to kill for the secret: Mathew Kinne who was married allegedly, preferred to murder his mistress than have his wife [right on their wedding day portrait], know about his secret life with Dominique

Poulos said during the investigation information was gathered leading to the arrest and Matthew Kinne.

‘Due to the fact we are early on in this investigation, we will refrain from making any comments or statements that could jeopardize the integrity of the case.’
In Mississippi, before police officers, teachers and certain other people can be arrested for crimes committed while they are on duty, a prosecutor is supposed to present evidence of probable cause to a judge.
Judge Howorth set a Wednesday hearing to consider whether that law applies, writing that state officials say Kinne ‘was not in performance of official duties as a law enforcement officer at the time of the alleged murder.’
Kinne is jailed in neighboring Panola County. Howorth said he would consider whether to set bail on Wednesday and ordered that a lawyer be appointed for Kinne.
Kinne has been an Oxford officer for four years.
WREG-TV reported that no one answered the door at his home on the outskirts of Oxford.

Kinne is a member of Oxford’s Mounted Patrol and was previously named the Mounted Patrol Officer of the Year during the OPD’s annual award’s banquet

Interim Oxford Police Chief Matt McCutcheon, [pictured at podium],  would only say that Kinne and Clayton were ‘possibly involved’ in some kind of relationship without elaborating

Addressing the media, interim Oxford Police Chief Matt McCutcheon,  would only say that Kinne and Clayton were ‘possibly involved’ in some kind of relationship but declined to elaborate further
The department named Kinne its mounted patrol officer of the year in January, The Oxford Eagle reported.
Dominique’s cousin, Josephine Williams said Clayton’s family and community are shocked and saddened over her untimely death.

She said: ‘She always kept a smile and would speak to you, she would always loved a hug.
‘I just feel lost right now without her being here because I’m so used to talking to her on Facebook and laughing, talking and singing, making her happy. I’m going to miss that.’
Another friend of Clayton’s said her family are hopeful that they will get justice for her.
Travis Blake added: ‘You have an officer who is sworn into protect and serve and he does the opposite, he takes a mother away form her children.’