MMA fighter arrested in St. George after two separate assaults towards same woman

MMA fighter arrested in St. George after two separate assaults towards same woman

ST. GEORGE, Utah – A mixed martial artist who fled Las Vegas, Nevada, is now in police custody after two alleged attacks against the mother of his son.

On Jan. 1, Cain Castillo, 36, was booked into the Washington County Jail on felony charges of aggravated assault resulting in serious bodily injury and aggravated child abuse — knowingly or knowingly, according to the affidavits.

Early Sunday morning, police responded to a domestic dispute near 2100 W 1600 N and were looking for 30-year-old Shayliann Lastowskl. Her parents told police she and Castillo were at their home drinking when a fight broke out between the two suspects.

According to the affidavits, Castillo took the alcohol away from Lastowskl and into another room because “once she starts drinking, she gets angry and often gets out of control.”

The two suspects began a verbal altercation inside one of the bedrooms where their one-year-old son was located. The parents told police they heard the fight turning physical.

According to the affidavits, Lastowskl’s mother told police she could “specifically hear the sound of a fist hitting flesh at least once.” When the mother walked down the hall, she saw Shayliann lying on her back in the bedroom entrance. Lastowskl told her parents that Castillo punched her several times.

Lastowskl’s mother noticed that Lastowskl’s face was starting to look swollen.

The parents tried to calm the two suspects and separate them, but Lastowskl threw items off a living room shelf and pulled out a bookshelf filled with sports memorabilia valued at thousands of dollars.

Lastowskl’s father called the police, prompting her to flee the scene on foot, according to the affidavits. While police were investigating the incident, Lastowskl returned to her parents’ home and was taken into custody. Castillo was also taken into custody.

“(Lastowskl) then stated that she had struck (Castillo) in the back during the argument in the bedroom,” according to the affidavits. “When asked for clarification if (Castillo) was the one who hit
she (Lastowskl) nodded yes, but kept repeating that she was afraid of getting him into trouble.”

While in police custody, officers saw Shayliann’s eyes roll and she collapsed in the seat of the police car while writhing and unresponsive. She was taken to the hospital and continued to have seizures.

According to the affidavits, Shayliann’s mother told police she had no history of seizures except for an incident on March 24, 2022, when Castillo allegedly assaulted her and caused her to have a stroke.

During that incident, officers responded to a domestic dispute between Shayliann and Castillo near 100 West and West Sts. Goerge Blvd. Witnesses and parties involved told police that Shayliann and Castillo were having a verbal argument outside the home when she tried to drive away in her car.

“While in their vehicle (Shayliann) was driven into the vehicle by (Castillo), at which point she stated that she wanted to kill herself and drove away,” according to the affidavits. “That’s when (Castillo) punched him in the back of the head, knocking him down to the street. (Castillo) then dragged her into the walk while yelling at her. “

It’s not known if Castillo was arrested during the March incident, but he quickly left Utah for Las Vegas with a warrant for his arrest after giving police an alias of “Cain Carrizosa.”

While being transported to the Washington County Jail for the January incident, Castillo told the officer “that once he is released, he is leaving the area and not coming back,” according to the affidavits. Police did not request bail for Castillo.

Castillo faces additional felony charges of robbery and aggravated assault resulting in serious bodily injury for the March incident.

Lastowski is facing felony counts of malicious damage to property and domestic violence in the presence of a child for the January incident.

Follow @KSLMichaelHouck

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