A police spokesman, Officer Scott Bloch, responded that the department would have no comment until a written allegation of wrongdoing was received.
"It's the perception," said Officer Scott Bloch, a police spokesman.
He and a 17-year-old friend were running away from two men who were trying to rob them, said Officer Scott Bloch, another police spokesman.
"The Police Department is very relieved that these were not homicides," said a spokesman, Officer Scott Bloch.
The girl, who was not identified, was in fair condition with numerous cuts and bruises, said Officer Scott Bloch, a police spokesman.
Officer Scott Bloch said 59 of the youths were bystanders.
The retired officer was shot once in the face, said Officer Scott Bloch, a police spokesman.
Four men, including the man suspected of shooting the officer, have been arrested, said a police spokesman, Officer Scott Bloch.
Officer Scott Bloch, a spokesman for the police, said detectives from the 10th Precinct have "made an arrangement to speak to them later this week."
Officer Scott Bloch, a police spokesman, said that the motive for the killing appeared to be robbery.