Miami City Manager Daniel Alfonso said the dead include a 20-year-old man and a teenage girl. Police officials say a 17-year-old girl was critically wounded in the shooting which happened near an intersection around 2:30 a.m.
"It's very early in our investigation," police spokeswoman Frederica Burden said. "I'm not sure how it occurred. We're investigating it now. I don't know if they were all outside standing, some in a car, some not in a car. I don't know that yet."
The sidewalk was littered with dozens of spent shell casings marked by blue police cones and shattered glass by mid-morning Tuesday. Some relatives standing nearby said they were afraid to talk about the shootings.
A Miami's Jackson Memorial Hospital spokeswoman said she couldn't release information, including how many people were brought there. She also said the patients had chosen not to release information about their medical conditions.
Police were asking anyone with information about the shootings to come forward.
Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.