It happened around 1:00 in the morning near Prospect and Tomah. But detectives say no one called police until late Thursday morning.
Investigators say Refugio Reyes was inside his house when someone fired shots from outside. They're now interviewing witnesses and neighbors, and trying to figure out what led up to the shooting.
Sgt. Dominic Barteau said, "Some neighbors say they heard gunshots regularly so they don't think anything of it, I'm not sure why somebody wouldn't call immediately if you hear an altercation or gunshots you should call immediately."
Detectives say they have some good leads on the suspect. This is Porterville's second homicide of the year.