From his first call to 911 dispatchers, Joseph Rodriquez had claimed his 19-month-old son had fallen from a bed.
Jayden Ledesma had been rushed unresponsive to Cook Children's Medical Center on Feb. 25, where staff quickly noticed bruises that didn't add up to the father's claims and called police.
The little boy would die two days later.
But a witness who came forward to police told a far different story, according to an arrest warrant affidavit.
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The witness told crimes against children investigators that he'd heard someone yelling outside his home on the morning of Feb. 25.
He looked out to see a man, later identified as Rodriquez, grab a small child by the arm and sling him down the front porch stairs, according to the affidavit.
"The witness stated that the suspect then hit the child on the back of the head with a large bottle, approximately 8" - 10" tall," states the affidavit, written by Detective R.B. Jackson. "The witness stated that the man hit the child with enough force to knock the child off his feet."
The witness told investigators that before the child could fall, the man grabbed the boy by the waistband of his pants and carried him to his SUV.
"The man then threw the child, face first, into the passenger side of the vehicle," the affidavit states.
Rodriquez had denied the allegations.
He was arrested Tuesday in Lubbock, where he's been staying, and booked into the Lubbock County Jail.
Samantha Moctezuma, Jayden's mother, has said her son was visiting his dad in Fort Worth when he died.
"For it to be his own father who is supposed to love and protect their child is what hurts the most," she told the Star-Telegram.
In an interview with Detective J. Young, Rodriquez said that Jayden had been jumping on the bed when he fell and hit his head on an old truck seat in the bedroom.
Rodriquez said the boy cried for a few minutes but then was fine, the affidavit states.
He told the detective that later that morning, he buckled his son into his car seat in his vehicle, then got into the driver's seat and asked Jayden what he wanted to eat for breakfast.
"Joseph stated that he turned around and Jayden was just staring at him," the affidavit states. "He stated that Jayden was unresponsive which caused him to dial 911 for help."
Relatives who lived with Rodriquez, who has also gone by the name Rodriguez, told investigators they had noticed a large red mark on Jayden's left temple the day before.
They said that when they questioned Rodriquez about the mark, Rodriquez claimed that Jayden had fallen off the bed that morning and hit his head on a metal bar connected to an old truck seat.
In a subsequent interview with Young, Rodriquez admitted he initially lied to police about what day Jayden had fallen from the bed, the affidavit states.
"Joseph stated that he was scared when Jayden became unresponsive and did not know what to do," the affidavit states.
On May 30, the Tarrant County medical examiner's office ruled Jayden's death a homicide caused from complications of a blunt force injury of the head.