DAKOTA DUNES, S.D. (KTIV) - Authorities in South Dakota have issued an arrest warrant for a man suspected of killing a woman in Dakota Dunes last week.

According to court documents, 39-year-old Alfredo Castellanos-Rosales is charged with first-degree murder and second-degree murder in the death of 23-year-old Jordan “Jordy” Beardshear. Beardsher’s body was found inside her Dakota Dunes apartment on Wednesday, April 26.

In documents to support the arrest warrant, an agent with South Dakota’s Division of Criminal Investigation said Castellanos-Rosales’ cell phone was near Beardshear’s apartment between 8:30 and 9:30 p.m. on Tuesday, April 25. Cell phone data also shows Castellanos-Rosales was near the same location that Beardshear’s phone was.

Witness statements also put Beardshear at her apartment around 8:30 p.m. Tuesday while she was waiting for Castellanos-Rosales to pick up her son. Authorities say Beardshear and Castellanos-Rosales have a child together and were in a “significant romantic relationship” for the last 12 months.

Read more: Friends and family identify woman found dead in Dakota Dunes, South Dakota

A search of Castellanos-Rosales’ residence identified clothing believed to belong to Castellanos-Rosales, which contain suspected blood, as well as, clothing believed to belong to Beardshear’s child, which was also containing suspected blood. Authorities have stated previously that Beardsher and Castellanos-Rosales’ child was found safely.

The DCI agent’s statement also mentions Beardshear suffered “significant injuries,’ including stab wounds.

“We are seeking the public’s help in finding this individual,” said South Dakota Attorney General Marty Jackley concerning the search for Castellanos-Rosales. “Please do not approach this individual who is considered dangerous. We request you contact law enforcement immediately with any helpful information.”

People with information on Castellanos-Rosales’ whereabouts can contact the Union County Sheriff’s Office at (605) 356-2679.

Victim’s family speaks about charges - relationship between suspect, victim

Family describe their relationship as one that descended into domestic violence. They say Beardshear moved out of a home they shared, and into her own place at the Dakota Dunes, to get away from the suspect.

The family says the pair were “co-parenting,” and that Beardshear may have been killed during a parenting exchange of their son, Mateo. Her father, Shane Christiansen, says everything was normal before the alleged murder.

”And she posted something at 8:56 p.m. (Wednesday night) of her cooking tacos and rice. And I responded and I never got a reply. And it was it was the last thing I got to see that she posted,” said Christiansen.

Beardshear’s family and friends have been posting pictures of the suspect on social media since last week.

In a statement, a DCI spokesperson says the agency wasn’t prepared to release his name and photo on their own until they had secured probable cause for an arrest warrant.

”And I understand you got... you can control the scene, you have to investigate that. But we felt like time was being lost valuable time. And obviously, it was if if people are not being apprehended,” said Christiansen.

Beardshear’s family says information about a memorial service will be released at a later time.

Family members KTIV spoke with say they’re relieved about the arrest warrant, and they’ve been told law enforcement is monitoring airports and conducting searches within all three Siouxland states

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