FBI Special Agent Shauna Dunlap said that while the plane was being cleaned about an hour after the plane landed Sunday, the cleaning crew found the apparent fetus. The medical examiner's office will do an autopsy to determine if it was viable.
This sounds like the question is, "Was this a miscarried/aborted fetus or a premature infant?"
Reminds me of the moment -- was it in "Jaws" or a Mad Magazine spoof of "Jaws"? -- in which somebody is looking for someone to consult about "the alleged shark". He's told "The alleged shark bit off his alleged head. Also his alleged arms and legs."