Lufthansa flight from Frankfurt to Chicago diverts over medical emergency

A Lufthansa Boeing 747 plane, which took off from Frankfurt bound for Chicago, has returned to Frankfurt International Airport following a medical emergency on board. The plane has since landed safely.
According to Lufthansa, the Boeing aircraft was diverted due to a medical emergency.
“It had to return due to a medical emergency of one of the passengers on board,” Lufthansa posted on its official twitter account.
@rschuur_aero@dgrutsch@flightradar24@airport_fra It had to return due to a medical emergency of one of the passengers on-board. /Bea
— Lufthansa (@lufthansa) August 21, 2016
Flight #LH430 was heading toward Chicago O’Hare International when the captain was forced to turn back after an emergency case was declared on board.
RT FlightEmergency Lufthansa #LH430 on the ground at Frankfurt.
— LIVEEDGES (@LiveEdges) August 21, 2016
/ CivMilAir pic.twitter.com/RKlgGuAQNEhttps://t.co/LotrZsOx3Q
The incident happened as the plane was flying near the city of Duesseldorf. After returning back to Frankfurt, it circled the airport on a couple of occasions in order to dump fuel before eventually completing a safe landing.