(CNN) -- A Tampa judge denied bail Wednesday for a Florida man charged with first-degree murder in the death of a 3-month-old child, who authorities say was thrown out of a moving car.



Police say infant Emanuel Murray died after his mother's ex-boyfriend threw him from a car on a Florida interstate.



Richard Anthony McTear Jr., 21, was arrested Tuesday, hours after a confrontation at his former girlfriend's apartment in which he snatched the infant, Emanuel Wesley Murray, the Hillsborough County sheriff's office said.



The child's body was found about 4 .am. Tuesday on the side of Interstate 275 in Tampa, Florida, by a local television photographer on his way to work. The photographer, WTVT's Jason Bird, said he stopped when he spotted something by the roadside



"It had to be a baby doll but it was too big to be a doll," Bird told CNN affiliate WFTS in Tampa. "I almost passed out, I started shaking," said Bird.



A preliminary autopsy determined the child died of blunt trauma to the head, the county medical examiner's office said.



Police were called to the apartment of McTear's former girlfriend about 3:15 a.m. Tuesday. The mother, Jasmine Bedwell, 17, told investigators that McTear had hit her several times and threatened "to kill the both of y'all," the sheriff's department said in a statement announcing the charges.



McTear threw a car seat containing the child across the room during the fight, causing the boy to fall onto the apartment's concrete floor, investigators said. He then picked up the boy and drove off in his blue Chevrolet Impala, throwing the child out while on the interstate, the sheriff's department said.



Video on CNN affiliate WFLA TV showed McTear being led out of a Tampa police squad car after his arrest. He ducked his head as TV cameras surrounded him on his walk into a police building.



When asked by reporters if he had thrown the child out of the car window, McTear answered, "It's a dirty game. A dirty game."



McTear is not related to the child, said sheriff's spokeswoman Debbie Carter.



McTear is facing additional charges of burglary with battery, felony battery, aggravated child abuse and kidnapping, the sheriff's department said.
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question: What charges does McTear face, answer: burglary with battery, felony battery, aggravated child abuse and kidnapping, | question: What charges does Richard Anthony McTear Jr. face?, answer: first-degree murder | question: What did Richard Anthony McTear Jr. do to the baby?, answer: threw him from a car on a Florida interstate. | question: Where was the baby found, answer: on the side of Interstate 275 in Tampa, Florida, | question: What did McTear do, answer: he snatched the infant, Emanuel Wesley Murray, | question: What did Richard Anthony McTear Jr. threaten to do?, answer: "to kill the both of y'all," | question: What does the baby's mother say?, answer: McTear had hit her several times and threatened "to kill the both of y'all," | question: What did McTear do to the child?, answer: thrown out of a moving car. | question: What charges is Mctear facing, answer: first-degree murder | question: Who found the child?, answer: Jason Bird, | question: What did Mctear do to the baby, answer: thrown out of a moving car. | question: Where was the baby found, answer: on the side of Interstate 275 in Tampa, Florida, | question: Where did the motorist find the baby boy?, answer: side of Interstate 275 in Tampa, Florida,