The photographer was struck by a Toyota Highlander SUV when he was attempting to take pictures of the singer's white $200,000 Ferrari in Los Angeles.
Guerra was prompted to get out of his car to take the pictures of the car when he could spot that the star’s sportscar was being pulled over by police.
He was twice being asked by the police to go back to car at which Guerra was reluctant, but he obeyed later.
However, while returning to his car, he was hit by a southbound vehicle driven by a woman.
Lamenting the death of the photographer, the 18-year-old Bieber on Jan 2, 2012, said that his thoughts and prayers are with Guerra's family and friends.