The victims were believed to be in their 40s or 50s. The two women were transported to a local hospital in stable condition.
The victims were standing in a driveway when three men walked up and opened fire multiple times then fled, police said.
The suspects were gone before San Bernardino police arrived and a detailed description is not currently available.
The shooting was reported at 8:12 p.m. in the 900 block of North G Street.
DEVELOPING: We will provide more details as they become available.