An undocumented migrant has been arrested for the murder of a mother-of-one from Oklahoma.

Ramon Hector Martine Ontiveros, 33, from Mexico, reportedly admitted shooting dead Paige Gomer, 28, on Thursday night.

He has since been charged with first-degree murder.

It is not clear if Ontiveros and Gomer knew each other.

'We are still actively involved in this investigation where an American citizen died in the hands of an illegal alien in Canadian County,' said Sheriff Chris West of Canadian County.

Ramon Hector Martine Ontiveros, 33, was charged with first degree murder of Paige Gomer

Investigators are pictured on the scene of the shooting on Thursday night in Canadian county

Courtesy of KFOR

While he was being transported to the Canadian County jail, officers said Ontiveros 'made admissions he was responsible for firing a weapon which resulted in Gomer's fatal gunshot wound,'

Ontiveros is being held with no bond, and an ICE detainer is in place.

Gomer's best friend, Sosha Christmas, has been remembering her.

Gomer, left, is being remembered by her best friend, Sosha Christmas, pictured right

'She always had your back always. She was just a phone call away,' said her friend Christmas

Gomer leaves behind a daughter. The Oklahoma State Medical Examiner is still investigating to pinpoint the exact cause of her death

'We were supposed to meet up and I just never got the time to,' said Christmas to KFOR. 'It just shows live everyday like your last. She would always help me through the worst times. She always had your back always. She was just a phone call away.'

Christmas said Gomer leaves behind a daughter.

'I sent people his mugshot and no one knows who he was,' said Christmas speaking about the alleged killer. 'I just hope he never gets out.

'I hope he never gets to see freedom again. I don't know who he is, but I hope he gets what he deserves.'

The Oklahoma State Medical Examiner is still investigating to pinpoint the exact cause of death.