Five people were injured when a man opened fire in a square in the Brazilian town of Hortolandia, around 110 kilometres from Sao Paulo, police said Saturday.
The attack happened just before midnight Friday in an area that is very popular with young people. Three adults and two teenagers were taken to a hospital, dpa reported.
Police suspect that the incident involved a vendetta between local drug dealers, as one of the injured had a police record for drug trafficking.
No suspects had been identified by Saturday.