By Tristan Smith, CNN

(CNN) - The attorney for a Florida man who shot at a car of teens over the weekend, killing one, says the incident bears no resemblance to the Trayvon Martin case.

Her client, Michael Dunn, is no "vigilante" but did feel threatened and shot out of "self defense," the attorney said.

"There are no comparisons to the Trayvon Martin situation," said Robin Lemonidis, Dunn's attorney. "He is devastated and horrified by the death of the teen."

Dunn, 45, was denied bond Monday on a murder charge stemming from the weekend shooting in Jacksonville. The violence was sparked by a confrontation about loud music at a gas station, the Jacksonville Sheriff's Office said.

Dunn told authorities that he had asked the teens to turn down the blaring music from their vehicle adjacent to his, as he waited for his girlfriend to return to the car.

He heard threats from the teens, Dunn told police, he felt threatened and thought he saw a gun in the teens' car. He grabbed his gun and fired at least eight shots, authorities said.

Seventeen-year-old Jordan Davis, among the teens, was killed. There were no guns found inside the teens' car, the Jacksonville Sheriff's Office said.

Ron Davis, the victim's father, said he is devastated and doesn't believe the shooting was self defense.