Police had few details about the shooting that occurred shortly before midnight Saturday in Toa Baja, just west of San Juan, and Bon said they were trying to determine a motive.
The dead, including one woman, had not been identified because their bodies are still at the scene, Bon said.
Authorities say 709 people have been reported killed this year in Puerto, 65 more than during the same period last year.
QUICK HEADLINES | MORE US/WORLD | GET NEWS ALERTS
-----------------------------------------------------------------------------------------------
ABC13 SOCIAL NETWORKING
Find us on Facebook® | Follow us on Twitter | More social networking
-----------------------------------------------------------------------------------------------
MORE FROM ABC13
ABC13 widget | Most popular stories |
Street-level weather
ABC13 wireless |
Slideshow archive |
Help solve crimes
-----------------------------------------------------------------------------------------------
