You obviously know more than what is posted in the original article. Please post the story you read that indicates who called the police? A link, too, or it didn't happen and you're talking out of your azz again, sport.
My computer has the MSN I would say home page, but don’t hold me to it. And MSN has headline news that rotate that > I saw “Cops shoot unarmed man in Fl, or words to that effect. I clicked on to the story and it gave the details. He was going through his and his mother’s car looking for a gigarette, heard footsteps and someone saying,”Keep your hands in plain sight. He thought it his neighbor playing a joke on him, and then the shooting started. Unknown to him his neighbor had called the cops saying someone was burglarizing his car.I am going from memory.
911 transcript available via link in original article.