A police officer described bubbling sounds coming from Trayvon Martin's chest in the moments after he was fatally shot by George Zimmerman as a prosecutor showed jurors for the first time a photo of the teen's body face-down in the grass.
Sgt. Tony Raimondo testified Tuesday that he tried to seal a bullet wound in Martin's chest with a plastic bag and attempted mouth-to-mouth resuscitation.
But Martin was pronounced dead a short time later.
The Sanford police sergeant was the seventh witness in two days to testify for prosecutors at Zimmerman's second-degree murder trial.
Zimmerman is pleading not guilty, claiming self-defense.
SPECIAL SECTION: George Zimmerman trial