The boy, who is under 15 years old, was shot near the intersection of 104th Avenue and Walnut Street around 9:26 p.m., according to police.
He was taken to a hospital, where he was pronounced dead Wednesday morning.
The homicide came about ten minutes after a woman was shot and killed in the 2000 block of 22nd Avenue, in Oakland's San Antonio neighborhood, police said.
Police said other injuries were reported in connection with either shooting, and no suspect information was available as of Wednesday afternoon.
