SAO PAULO (AFP) - A flight from Madrid to Sao Paulo operated by Brazil's TAM airlines was forced to return to the Spanish capital due to an alleged bomb threat, the company said.

The flight left at 2037 GMT Monday (4:37am Tuesday Singapore time) and returned to Madrid while flying over Morocco, according to a map published by the G1 news website.

TAM "was notified by Spanish authorities of an alleged bomb threat aboard Flight JJ8065. The plane returned to its airport of origin, landing safely," the airline said on Twitter.

Another TAM flight on the same route was forced to make an emergency landing due to turbulence in September 2013, injuring 15 people.

The jolt only lasted about 10 seconds, but it was enough to throw passengers without their seatbelts out of their seats.