At 12:38 p.m. Monday, Los Angeles County sheriff's detectives responded to the Royal Inn Motel, in the 4800 block of North Long Beach Boulevard regarding the death of a child.
The boy was taken to a local hospital, where he was officially pronounced dead.
Authorities did not release any further information.
The investigation was ongoing.
Anyone with more information was urged to call the L.A. County Sheriff's Department homicide bureau at (323) 890-5500. Those wishing to remain anonymous may call Crime Stoppers at (800) 222-8477.