People reported hearing gunshots in the area just after 2 p.m.
Nobody was hit by gunfire and the firearm was legally registered, a spokeswoman said.
No one has reported property damage and no victims have come forward, police said.
In the first incident, a man and a girl reported that there appeared to be a bullet hole in an inside wall of their home at about 9:40 Saturday morning.
Police blocked off a stretch of Pacific Coast Highway early this morning after officers investigating a hit and run collision were fired upon by unknown suspects, police said.