Early reports and statements suggest the remains "fell from a plane's landing gear".
Police spokesman Nawaf bin Naser al-Bouq said: "Police received a telephone call at 2:30am from a witness reporting the fall of human remains at an intersection in Mushrefa neighbourhood."
The incident follows news that a Saudi Arabian Airlines jet was forced to make an emergency landing in the city of Medina in the west of the nation on Sunday, leaving 29 people injured.
However a spokesman for the General Authority of Civil Aviation said there was no connection between the emergency landing in Medina and the Jeddah incident.“Police received a telephone call at 2:30am from a witness reporting the fall of human remains at an intersection in Mushrefa neighbourhood”Police spokesman Nawaf bin Naser al-Bouq
It is not uncommon for people at poorly guarded airports in the region to climb inside aircrafts through its landing gear.
However this is incredibly dangerous and most people freeze to death once the plane reaches cruising altitude but some do survive.
In April last year Jose Matada fell out of a British Airways flight from Angola as it made its way into Heathrow airport after stowing away in the plane's landing gear.
Original Source: http://www.dailystar.co.uk/news/latest-news/359087/Human-body-parts-fall-from-the-sky-in-Saudi-Arabia