CNN — The Florida neighborhood watch volunteer at the center of a national firestorm over race, crime and gun rights gave his first television interview Wednesday, apologizing again for killing an unarmed teenager.

George Zimmerman sat for an interview with Fox News host Sean Hannity, expressing his regrets to the parents of 17-year-old Trayvon Martin. Zimmerman has been charged with second-degree murder for shooting Martin in what he says was self-defense, and he apologized to Martin's parents during an April bond hearing.

"My wife and I don't have any children. I have nephews that I love more than life. I love them more than myself. And I know when they were born, it was a different unique bond and love that I have with them," Zimmerman told Fox in an excerpt released Wednesday evening. "And I love my children even though that they aren't born yet. I am sorry that they buried their child. I can't imagine what it must feel like. And I pray for them daily."

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