An officer saved a missing boy from a near drowning after finding the boy partially submerged in a nearby river.
His body was found near the area where he was last reported missing.
The father of 7-month-old Emmanuel Haro was seen with law enforcement officials in a remote field in Moreno Valley, California as the search for the child's body continued.
Jake and Rebecca Haro were arrested on Friday, the San Bernardino County Sheriff's Department said.
Detectives believe his mother and her boyfriend, who had already served time for murder, were involved in the Carl's death.
The man convicted in the 1979 killing of 6-year-old Etan Patz was awarded a new trial Monday as a federal appeals court overturned the guilty verdict in one of the nation's most notorious missing child cases.