A  man who killed his son and critically wounded his ex-wife before confessing on a Facebook Live video has been found dead from a self-inflicted gunshot wound.

Earl Valentine kicked in the door of Keisha Valentine's home in Norlina, North Carolina on Tuesday and shot her before killing his son Earl Jr., police chief Taylor Bartholomew said.

Valentine posted a video on his Facebook page, confessing to the horrific crime and saying his ex-wife 'deserved what she had coming.'

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Valentine posted a video on his Facebook page admitting to his ex-wife's shooting. A still from the video is seen above

North Carolina police traced Valentine's cellphone to Richmond, Virginia, on Wednesday morning where police say the killer was visiting his father's grave.

Officers then tracked Valentine to Columbia, South Carolina, where U.S. Marshals found him dead from a self-inflicted gunshot wound in a motel.

Police Chief Taylor Bartholomew believe that Valentine shot his 15-year-old son when the boy tried to protect his mother Keisha who remains in critical condition in hospital.

Victims: Earl Valentine killed his son, Earl Valentine Jr. (left) and injured his ex-wife Keisha Valentine (right)

Earl Valentine kicked in the door of his ex-wife's home (pictured) in Norlina, North Carolina on Tuesday and shot her before killing his son, police chief Taylor Bartholomew said

Earl Valentine kicked in the door of Keisha Valentine's home in Norlina, North Carolina on Tuesday and shot her before killing his son Earl Jr., police chief Taylor Bartholomew said

The chief said he talked to Valentine on the phone and described him as 'cold and callous' and showing no remorse for the shootings.

'We actually got a call from the young victim with a dying declaration that his father had shot him and his father also shot his mother,' Bartholomew said according to WTVR.

Valentine had also posted a video on his Facebook page admitting to his ex-wife's shooting, Bartholomew added.

'What's up everybody? I just killed my f***ing wife,' Valentine said. 'I loved my wife, but she deserved what she had coming.'

Authorities are looking for Earl Valentine (pictured in an old mugshot), who is accused of shooting his ex-wife and his 15-year-old son, killing the boy, before recording a confession on Facebook Live

'I've been very sick for months and this is something that I could not help,' he added.

Police say Valentine showed no remorse for the shooting.

'His main focus was to make sure his ex-wife was dead,' Bartholomew said.

In his Facebook video, Valentine continued: 'She lied on me, had warrants taken out on me. She drug me all the way down to nothing. 

'I know a lot of y'all are going to be disappointed in me, but it was something that had to be done. 

The post has since been removed.  

Keisha Valentine and her son had fled to Norlina nine months ago to escape her abusive ex-husband, Bartholomew said.

She'd been granted a year-long domestic violence restraining order that had just expired last month.

Bartholomew said there was evidence Valentine had argued with the victim's family on Facebook shortly before the attack.

But police are still unsure what prompting the shooting in the early hours of Tuesday morning. 

Valentine told police he was on his way to Richmond, Virginia, to kill other family members, according to Bartholomew.

Those relatives were placed under police protection but authorities have received no reports of any further injuries or casualties.