Authorities have charged a Missouri man in connection to the “violent” death of his infant son, whom he allegedly killed during a “fussy” crying episode, according to police reports.

Adrian Horton, 21, from Parkville, faces charges of first-degree endangering the welfare of a child resulting in death, following an investigation by the Kansas City Police Department. They found that his son, Mateo Rideout, died from injuries in October 2024, “caused by violent trauma to the head, with potential forces such as acceleration and deceleration, possibly including shaking,” detailed in a probable cause statement filed last Friday, Aug. 1, in Platte County.

But that’s not all: Horton also allegedly sexually assaulted an ex-lover outside of a mall less than a year before his son’s death.

Horton was detained on Monday, approximately eight months post his arrest for the alleged rape, after multiple police interviews where he tried to clarify what happened to Mateo, according to the probable cause statement.

Police claim that during these lengthy questioning sessions, Horton’s explanations “changed several times,” initially saying he was “patting” Mateo in “a pretty aggressive manner” due to the baby’s crying.

“At one point, Adrian advised after he changed [the child’s] diaper, [Mateo] started to choke,” the probable cause statement says.

Horton allegedly stated he administered CPR “the adult way” on the infant before calling Mateo’s mother for assistance. He reportedly confessed to officers, “I might have used a little more force than I should have.”

The mother told investigators that Horton was “always frustrated or annoyed” whenever he had to do anything with their son and that she had asked him to change the boy’s diaper on the night of his death after he started crying.

“As Adrian got up, she heard him say in a frustrated tone, ‘Why you always crying bro?’ talking about [Mateo],” the probable cause statement says, alleging that Mateo’s mother heard “loud patting” coming from the child’s room moments later.

“When the patting noise ceased, she heard Adrian yell her name and for her to come to [Mateo’s] room,” police recount.

The mother allegedly said she saw Horton holding Mateo “with a panicked look on his face” while the boy was “gasping for air.” She told authorities that Horton had not been abusive toward their son before, but he had become “increasingly more violent” recently, according to the probable cause statement.

Horton told cops that he and the child’s mother “were having sex” the night he died when the infant “became fussy in his bassinet next to the bed,” the statement says. He allegedly claimed Mateo’s “onesie” kept getting caught on his head as he was trying to remove it, which caused the child’s head to “jerk in a backward motion,” police say.

As he was changing Mateo’s diaper, Horton said he removed his diaper and the baby began to “pee on him,” per the probable cause statement. Horton allegedly told police he began to play with Mateo’s arms in an “orchestra conductor” motion while waiting for him to finish.

“He did not believe he was being too rough,” the probable cause statement says, alleging that Mateo “spit up” moments later, which prompted Horton to grab him “by his neck” and pat him on the back, according to police.

“When he didn’t get the result he wanted, Adrian advised he began to pat [the child] on the back in a pretty aggressive manner until spit up came out of his mouth,” the probable cause statement says. “Adrian then observed [the child] to be gasping for air and yelled for [the mother] to come into the room.”

For the rape case, authorities say Horton sexually assaulted an ex-lover in December 2023 at the Zona Rosa shopping mall in Kansas City. He is accused of choking and attacking the victim while they were in a parked car after she told him to stop multiple times, according to the probable cause statement related to that incident.

Horton was allegedly tied to the rape through DNA testing and a sexual assault examination kit performed on the victim. He was behind bars Tuesday on a $150,000 bond for the rape charge and on no bond related to his son’s death.