Staff made the grim discovery on an American Airlines jet at New York's LaGuardia Airport on Tuesday morning.
Fetus was discovered by a cleaning crew Tuesday morning.
Fetus was thought to be 5 months along.
Part of that cooperation is turning over video recordings from the plane to determine who might have been in the restroom before passengers left Monday night, the airline source told the Observer. It was the Airbus A321's only flight of the day.
Chief Minister Naveen Patnaik expresses grief over death of M Karunanidhi
On February 10, 1969, he became Tamil Nadu's Chief Minister following the death of DMK founder C.N.Annadurai for the first time. DMK president and five-time chief minister of Tamil Nadu , Mathuvel Karunanidhi was a popular name in the country.
American Airlines said it would not impact the rest of their fleet.
Airport officials this morning tweeted about possible delays, but did not make mention of the reason.
The plane is out of service as the investigation continues. "We will release determination when investigation is complete".
They instead turned all questions over to the Queens District Attorney's Office which is yet to make a statement.
The flight is scheduled to depart from Charlotte-Douglas International Airport again Tuesday evening, August 7 en route to LaGuardia.