On Tuesday Pacifica Police responded to a call around 2 p.m. about a physical fight that took place between subjects on Perez Drive and Rosita Road.
Reporting parties advised of a gun allegedly being involved in the altercation, followed by gunfire, according to the Pacifica Police. No injuries were reported.
A Pacifica Police unit in the area located a suspect vehicle as it was leaving the area. The vehicle was stopped and four subjects were detained.
The investigation into this incident is continuing by Pacifica Police Detectives.
There is no further information for release at this time.
Pacifica Patch will update the story when more information is released about the incident.