A 21-year-old man was charged with first-degree murder Tuesday after police said he snatched up his ex-girlfriends 3-month-old son during a fight and then threw the baby from his car on an interstate highway.

The childs lifeless body was found near Interstate 275 north of downtown Tampa early Tuesday. The man, Richard A. McTear Jr., was captured several hours later. Deputies said he is not the childs father.

The Hillsborough County Sheriffs Office said McTear was arguing with his 17-year-old ex-girlfriend, Jasmine Bedwell, at her apartment when he began beating her and the child. She reported that McTear threw her son, Emanuel Wesley Murray, down on the concrete, then picked him up and fled in his Chevrolet Impala.

Jason Bird, a news photographer for WTVT-TV in Tampa, spotted the babys body on his way to work at about 4:30 a.m.

On the side of the road, I saw something out of the corner of my eye and at first I thought it was a baby doll, and then as I was thinking about it more I thought that was awfully big for a doll, Bird said in an interview on the station.

He turned around and went back to take another look.

It was laying there with its eyes open, he said. I couldnt look at it. It freaked me out, but fortunately law enforcement came right away.

Its hard to find words to describe why someone would do this to a poor, defenseless child, sheriffs Maj. Harold Winsett told reporters at the scene.

Deputies located McTears car at his home. Witnesses told deputies where he could be found, and he was arrested about four hours later after a foot chase.

McTear also was charged with burglary with a battery, felony battery, aggravated child abuse and kidnapping, said sheriffs spokeswoman Debbie Carter.

McTear had previously been arrested on charges including felony battery, aggravated assault with a deadly weapon and domestic battery by strangulation. According to the Florida Department of Corrections, McTear was sentenced to two years probation in June 2008 on a felony battery conviction. An arrest warrant was issued when he failed to report.

Last month, Bedwell sought an injunction against McTear for domestic violence, but the case was dropped because she didnt appear in court.

In court papers, Bedwell said McTear was violent, often armed and had a drug problem. She said he had forced his way into her apartment and beat her.

McTear had not yet appeared in court and did not yet have an attorney.

Cops finally caught up with McTear early in the morning hours and, asked why he would do such a thing, McTear reportedly replied, Its a dirty game. Absolutely horrifying