An animal rights organization is planning a protest Tuesday after an off-duty FBI special agent shot a dog in Center City Philadelphia.

The incident occurred around 8 p.m. Monday in front of the Touraine Apartments near 16th and Spruce streets, according to investigators.

Philadelphia police are looking into the dog's death. Neighbors say they were frightened after they heard the shot so close to their homes.

There is video circulating from immediately after the incident where witnesses said dogs appeared to possibly be fighting or had their leashes tangled.

The owner of the dog that was shot appeared to have two dogs. She rushed with Philadelphia police to be with her injured dog and left the other pet in the care of someone else at the scene.

Officers blocked off a small area on the block of Spruce Street Monday night after the FBI said a special agent shot another dog.

The FBI says the agent shot an aggressive dog and they take all shooting incidents involving the agents and task force very seriously.

Philadelphia police say she was walking her dog in the area when she told them another dog started attacking her dog. That's when police say she shot and killed the dog at 7:45 p.m. Monday.