(CNN) -- The attorney for a Florida man who shot at a car of unarmed 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.