The shooting occurred last night just a block from where the city held a party earlier yesterday for a special event. Baltimore Police Spokesman T J Smith said none of the injuries was life-threatening and that the victims included a father and his 3-year-old daughter.
Smith tweeted that the suspects ran after the shooting and that one of them was armed with a shotgun and the other two had handguns.
At the scene, police had at least three blocks cordoned off and were keeping away bystanders and reporters. Police Commissioner Kevin Davis could be seen at the site, talking with detectives.
Authorities didn't not immediately release other details of the shooting and how the injuries occurred.